Magic: The Gathering/WMG

The Planeswalker Spark is related to both the Metagene and the Speed Force of The DCU.
The planeswalker spark is a mystical quality within someone which, when activated (usually under periods of great stress) gives them fantastic magical powers and the ability to move between planes. The metagene is a genetic quality within someone which, when activated (usually under periods of great stress) gives them fantastic super-powers. The speed force is a mystical dimension which "chooses" people (usually under periods of great stress) and gives them fantastic super-speed powers, which can be used to move between universes. If the Flash ever visited Dominaria, he'd be recognized as a planeswalker -- more specifically, one of the new, post-Time Spiral planeswalkers, who are more like superhumans than immortal gods.
 * This would require both of the latter to be somehow magical. The Speed Force itself seems like it would be tied to red mana (which has most "speedy" mechanics); note that, as time goes on, the various Flashes have themselves been acting more red, with Bart the most so.
 * This is not to be confused with Sparks from Europa, who can make fantastically-powered abilities while giving others stress.

Planeswalkers are Highlander Immortals.
They don't age (at least, they didn't used to) and are hard to kill, their abilities lay dormant for most of their mortal lives and activate only under great stress such as physical death, they are often driven at least partly mad by the transformation into an immortal, require no life support, and can sense things that mortals cannot. The Highlander immortals are trapped on a particularly sticky plane, and the only way to escape is to shed one's physical form and travel as a pure Spark, until such time as they can regain physical form. The Immortals are only subconsciously aware of this, and find excuses to "kill" each other by severing the brain from the life-supporting body. The illusion powers from the third film (assuming it ever happened) and various other supernatural feats were the latent magic of those Planeswalkers emerging, untrained and sporadically.
 * This editor would like to point out that Urza survived being decapitated. He was alive long enough for the crew of the Weatherlight to activate the Legacy Weapon and shoot Phyrexia. Not sure what happened to him after that, but he was alive for at least that long after being diced up.
 * Urza wasn't a real Planeswalker though, he was just tapping into the power of Glacien, an actual Planeswalker, whose soul was trapped in Urza's eyes- he died when they were removed. The real question, then, is if Glacien would have died if his head had been chopped, an interesting prospect given that by the time his host Urza died, he didn't have an actual body.
 * Can you decapitate a gemstone?
 * Where do you get your Urza info? I was under the impression that he had his own spark.
 * The Thran, which established that Glacien's spark was in the crystal, and simple logic, given that the moment Urza's eyes were removed, he died, and the moment they were installed in Karn, Karn became a mechanical planeswalker.
 * I knew that he had the eye stuff. I just don't think that there is any reason to think that he didn't have his own spark.
 * He survived their brief removal by Radiant.
 * Urza did, indeed, have a spark of his own. However, he had Glacien's spark too, making him even more powerful than a normal planeswalker.
 * Anyway, unlike a Highlander immortal, decapitating a pre-Time Spiral block planeswalker isn't necessarily fatal. As long as their brain (or equivalent) is intact, they can keep on regenerating the rest of their body until they run out of mana to do it with. (They're kind of like zombies; it takes a Boom! Headshot! to finish one off.)
 * Note that in Time Spiral, Teferi was cut apart into multiple separate pieces by Nicol Bolas and primarily took so long to regenerate because he was busy thinking. And Radha stabbed him directly in the head, but he was fine. So it's more like you have to just utterly destroy them on every level or they keep coming back. Like fighting a Q or something.

Our universe is a plane of Dominia.

 * After Hecatomb (set on Earth) was cancelled, Wizards released the complete text of its never-produced Sangral City set. You can find it here. Now, scroll down to the very last card... We came SO CLOSE to finally seeing what he looks like (apart from the pre-cyborg grey-robed old guy with the Fu Manchu), but no...
 * there was an official picture in one of the fat packs he looked more like a proto-eldrazi
 * According to wizards.com, the Planeswalker Spark appears with a ratio of roughly one per one million intelligent beings. If our universe were part of Dominia, we should have about 6000 people with either a latent or an active Spark on Earth alone.
 * But of those one in a million, only one in a million ever have that spark ignite: most live their lives and never have it happen. So it's more like one in one trillion.

The Phyrexians really exist and are planning to invade this plane of existence. The sleepers are already here in our schools. This troper suspects many, even himself, of being a sleeper
The fact that they still exist means that they haven't invaded Dominaria yet. The fact that they don't read the Magic novels and prevent such disaster means that they are incredibly Genre Blind.
 * Maybe they are planning to invade Earth first, get the MTG books and then invade Dominaria. In that case, see Nightmare Fuel.

Hans is a planeswalker.

 * Apparently, he ran into a revenant once, but that card was printed in Stronghold, and Stronghold takes place more than 2000 years after Ice Age. The only explanation for Hans to have lived so long, and gotten from Dominaria to Rath, would be that he's a planeswalker.
 * Alternately, Hans just ran really, really fast. So fast that time began to move significantly slower for him than for the rest of the multiverse as per Relativity, and his great speed somehow enabled him to run between planes. That's just how scary the Lhurgoyf is.
 * He's not a planeswalker. He's a planesrunner.

Grandmother Sengir is from Ravnica.
She is an ancient planeswaler, named, as far as we know, Ravi. The city at the heart of Ravnica which slowly grew across the entire world was called "Rav". Perhaps either Ulgrotha or Ravnica has the Middle Eastern practice of calling someone _____i after a place they have been or hail from (for example, "Hajji" for one who has been on the Hajj). Over the centuries, the "woman from Rav" simply became "Ravi," since nobody knew any other name for her. A Ravnican might be able to function pretty well on Ulgrotha - both have a vague Eastern Europe flavor - and she was able to avoid the various warring power blocs from trying to kill or recruit her all the time, but eventually, she underestimated Baron Sengir, and got driven mad and enslaved.
 * Perhaps she went to Rabiah and got the title there. Rabiah seems to be more likely to give out -i titles, being a plane-wide Quarac.
 * Jossed by "The Secrets of Magic" short story anthology.

Yawgmoth planned the collapse of Dominaria, and the destruction of traditional planeswalkers that was necessary to solve it
Think about it. What was Yawgmoth's desire? Power. However, he could only be a god in Phyrexia, in that small center. Meanwhile, planeswalkers were gods no matter where they went. He had his primary plan to conquer, but a secondary plan of, if he couldn't be a god, nobody else would. Note how most of the disasters that caused Rifts on Dominaria were caused attempting to combat Yawgmoth and his Phyrexians- a Xanatos Gambit, perhaps? Most likely, he had prepared something to eliminate the rifts, that he would only use if he won. If he lost, then he knew he would take all planeswalkers down with him- maybe not immediately, but eventually.
 * That's actually not TOO far fetched, although pretty unlikely to be cannon. Yawgmoth is both increadibly powerful and somewhat insane, and so I wouldn't put it past him to plan to annihilate all the planeswalkers. Particularly, since the new breed of planeswalkers are so... inferior... to their forebears, should Yawgmoth return to power, would there be anyone left who could truely challenge him ?

The game exists in the Planescape setting
In Planar cant experienced travelers of the planes are called... "Planewalkers". Given Planescapes power setting, "experienced" would be epic level wizards with nothing better to do than to... play Magic.

Suntail Hawk is related to Aven and Griffins
The card Suntail Hawk seems to have a glaring art error that has survived several reprintings, but the original flavor text suggests an evolutionary relationship to Aven, who have six limbs(forelimbs, legs and wings). This could also tie into Griffins, who have the same body-shape.
 * Well, Avens are anthropomorphic birds, and Griffins are half bird half cat, so logically a hawk, which is a type of bird, is related to them.
 * He means Avens / Griffins are more closely related to Suntail Hawk than to four-limbed birds.
 * On the original Judgment printing, Eesha is making a comment about the much lesser psychological needs of the aven's forbearers, of which the suntail is presumably one. Since the aven themselves are six-limbed, it makes sense that one of their ancestors was likewise. Suntail=still-extant example of just such an ancestor.

The next set will ruin the game. FOREVAR.
No seriously, any time anyone hears anything about the next set (or the current set. Or the last set.) people scream about how it ruined the game.
 * Back in my day, we said the Urza Saga ruined the game, long before these kids and their Planeswalker and Eldrazi rabble even bought their first pack!
 * To be fair, Urza's Saga actually did ruin the game for a while.

== The down-powering of Planeswalkers, the Planeswalker cards, and the Cthulhu-level threats from the Eldrazi, etc., are leading up to a gigantic Planeswalker War, which will be fought by thousands of new-generation Planeswalkers ==

Think about it: there have been sets focusing on Enchantments (Urza Block), Artifacts (Mirrodin), Creatures (Onslaught), and now even lands (Zendikar). The only permanent type left to cover is Planeswalkers, and given the name of the game is Magic the GATHERING, it seems all but set that there will be a multiverse-wide war between the Planeswalkers (possibly involving even some old ones like Serra, though not as actual cards, given their immense power), and a Planeswalker-heavy set depicting that war. The given implications of Common and Uncommon Planeswalkers also means that they would be far more accessible to the general playerbase, as opposed to the Mythic-Only rarity they currently have.
 * So... cheaper Planeswalkers, Planeswalkers with less impressive, though still useful, abilities, Protection from planeswalkers, tribal planeswalkers, tutor for planeswalkers, abilities that specifically work against planeswalkers, enchant planeswalkers... did I miss anything?
 * Artifact Planeswalkers. (Scars of Mirrodin?)
 * Maybe only colourless Planeswalkers.

The Oracle en-Vec was Urza in disguise.
Hence why "she" knew so much about Gerrard--Urza used the Rathi tribes' legend of the Korvecdal to push Gerrard in the right direction. As soon as Gerrard left Rath, oops, turns out the Oracle was wrong, the Korvecdal was Eladamri the whole time. He could have spent decades hiding in this identity among the Vec. This also explains why the Oracle just up and disappeared after Rath was fused to Dominaria--Urza no longer had any work there, so he abandoned his disguise.

Zendikar is Australia.
They're both places of magic and wonder, that are also Death Worlds and full of wildlife that will murder you if given motive and means. The Eldrazi are either bunyips that have gained sentience and magic or mutated dingoes.
 * Objection! Australia would never be so wimpy.

Yawgmoth is alive.
Possibly evidenced by Karona's encounter. The possibility of alternate timelines and such coming into play may be true, and Windgrace's certainty on the matter seems to seal it, but Windgrace may not be as omniscient or knowledgeable as he would try to show himself as.

Yawgmoth is dead, Long Live Yawgmoth.
Lets face it, the old Yawgmoth is boring at this point. The story is done to death and no one really wants to see him come back. But, he's a very interesting position. It seems far more likely that we'll see a walker either ascend and become the 'new Yawmgoth' in the 'Dark Ascension' set/book/whatever, or that we'll end up seeing a planeswalker ascend and end up resurrecting the old Yawgmoth.
 * The New Phyrexia trailer suggests this one is true. And it's Karn.

Yawgmoth is physically dead
But still exists, in a sense, as an idea, much like any other summoned creature. AND HOW CAN YOU KILL AN IDEA?
 * Inception much?
 * This and the above two theories could be supported by some evidence - in the copyright records from which the title Scars of Mirrodin was leaked, the presumed last set in the block is "New Phyrexia".
 * Not just presumed now, but potential...Depending on some factors yet unknown but presumably involving fanbase response, the third set of Scars block is going to either be "Mirrodin Pure" or "New Phyrexia".
 * No, they knew which one they were going to do even before Scars was published. This is just them maintaining suspense until the previews begin. Magic Online will have a Mirrodin Pure vs. New Phyrexia duel deck set, but that's about it for the second option being seriously considered.

Karn's coming back.
Fact 1: Karn was on the crew of the Weatherlight. Fact 2: the Weatherlight opposed the Phyrexians. Fact 3:Post Weatherlight Saga, Karn got a Planeswalker spark and created an artificial plane, Mirrodin. Fact 4: the Phyrexians are attacking Mirrodin.

Therefore, a semi-reasonable resolution to the Scars of Mirrodin block may involve Karn coming back (planeswalker card included) and kicking major ass, perhaps with the aid of the Legacy Weapon.
 * If he comes back to kick ass, he'll be on the Phyrexian side. He was tainted by Phyrexia - that's where Mirrodin's taint came from, remember - and his spark was holding it back. When Time Spiral messed with that, he hurled himself into the void because it was consuming him. We're not going to see "Karn, Planeswalker"... but we might see "Karn, Father of Machines" ("Father of Machines" being Yawgmoth's title...)
 * As of Mirrodin Besieged, he is back. And he's pretty damn Phyrexian.
 * Karn is really more of a Zombie Infectee trying to Fight Back The Phlebotinum. How that turns out is probably going to be a major point in the war.
 * It's worth noting that the Phyrexian taint, in the form of the transfiguring oil, was there from the very beginning, simply because Urza had used Phyrexian technology to create Karn. Either Yawgmoth or Phyrexia's creator must be the master of the Xanatos Roulette (probably the latter). Which leads to...
 * Jossed. Karn's back, free from the Phyrexian taint, and kicking ass.

Nicol Bolas created Phyrexia.
This one is Jossed right out of the box, in The Thran when Yawgmoth is first brought there the corpse of the planeswalker that created what would become Phyrexia is in the 9th sphere.
 * Then again, was that a corpse...or a dimensional chrysalis? Not that it's necessarily, or even ought to be, Bolas.
 * This one might actually make sense if you think about it. In The Thran, Yawgmoth discovers the body of the planeswalker that presumably created the plane that would become Phyrexia, and it was a dragon. We don't know much about what happened to Bolas between his exile from Dominaria at the end of the Elder Dragon Wars (which took place before the Thran even existed), and his reappearance in the Time Spiral and Alara blocks and his plan to absorb the Maelstrom created by the fusing of the shards. It's entirely possible that the "corpse" Yawgmoth discovered was actually Bolas in a state of hibernation or stasis, and that Bolas built the plane that would become Phyrexia himself, it's certainly within his power. Even now, Bolas is likely the most powerful planeswalker in the Magic multiverse, and his plan in the Alara block implied that he was once even more powerful than he already is. Not only that, he seems to have an unusual interest in the forces of New Phyrexia on Mirrodin...

The Eldrazi aren't colorless; they rapidly shift between every color.
Compare an Eldrazi Spawn token to a Shapeshifter one. The card borders are different colors, despite both being colorless creature tokens. The Eldrazi cards have bits of many colors on the border, and being any color would work the same as being no color.
 * Actually, shifting from color to color would NOT work the same way as being colorless--you've forgotten to account for "protection from all colors" effects. There aren't a lot of them, but there are a few.
 * Then it also is colorless sometimes as well.

Phyrexia was originally an attempt to create an Eldrazi-proof plane.
Given that the Eldrazi feed on planes, one wonders what would give them an upset stomach, or what would warn them about possibly getting one. Given its extremely bizarre-verging-on-mocking way of performing natural and geological processes, Phyrexia could very well have been just that kind of nastiness. Yawgmoth aside, it could perhaps be argued that even things associated with black mana only had tangential analogs in Phyrexia; nothing in there could hope to nourish an Eldrazi, everything would be toxic to one. (If anyone out there's read "The Thran", I'd appreciate your input) This also explains why the Phyrexians think all their assimilation is an improvement, even if, as Venser notes on Mitotic Manipulation, they can't even understand nature enough to know how to make it better. It's not nature et al. they're improving, but the plane. Nature? Death and rebirth? Community? Passion? Independent thought? You're just making the Eldrazi salivate. All that matters is that something is neither void nor potential Eldrazi chow. Of course, depending on just how evil Phyrexia's original creator was, one wonders if the plan was just eternal safety from Eldrazi, or assimilating them.
 * To follow up, there's also the possibility that the Phyrexian oil predated Yawgmoth, a prototype way of further Eldrazi-proofing Dominia--he just refined it. It's also possible that Yawgmoth himself was "enslaved" (if that's even the right term, depending on how resonant his and Phyrexia's ideals were at the onset), and that, rather than him ruling over Phyrexia in whole, the plane's essence ruled him. Rather than Phyrexia's archon, Phyrexia's supreme prophet.
 * And an even scarier thought has come to mind about what would animate an evil planeswalker to create an Eldrazi-proof plane. Step 1: Create that plane (or commandeer it, if Bolas didn't create the first one; he may just be taking notes from the actual creator). Step 2: Unleash the Eldrazi. Step 3: Hide in Phyrexia. Step 4: Wait for the Eldrazi to eat up every other part of Dominia, then die of starvation. Step 5: Step outside and rebuild Dominia in your image.

Elspeth will turn evil, but NOT black.
This is more of a reply to the incessant threads on the Mt G forums about Elspeth turning evil, and thus White/Black, which I find rather unlikely, considering Elspeth's obsession with finding a community to belong to, and Blacks rampant sense of individualistic "Me first, everyone else second" mentality. Rather, she'll turn either:
 * White/Blue: Becoming an Orwellian dictator enforcing conformity to the community, or
 * White/Green: Creating a form of Hivemind for everyone to be subsumed into.
 * She could become White/Black by becoming Fascist, submitting herself fanatically to one group while ignoring or even subverting the needs of everyone outside this group.
 * Fascism can also work as pure White, if the elitism aspect is very well justified [to her twisted mind]
 * Or just stay white White is the color of dogma and Lawful Stupid, after all.
 * Yes, but Lawful Stupid is still not evil. Stupid, yes. But that's not the same as evil.
 * White can be completly evil. Communism is identified as the most White of all philosophies, and her turning into an Orwellian Big Brother can work very well as White.
 * Communism can be pure White. It can also be White/Red, White/Black, or even White/Green. Maybe even Green/Red. For example, Chavez' version of Communism seems to be dominantly Red at least until now (but YMMV here). But I agree with you, Elspeth turning into an Orwellian Big Brother (or rather Big Sister) could work.
 * Even better, this suddenly looks like a viable flaw in the system should the next set be Mirrodin Pure (well, with the recent revelation of New Phyrexia, more like "should the next set have been"), rather than New Phyrexia. With her mind shattered by Phyrexia's sheer relentlessness and ability to taint just about everything (not to mention that a Phyrexian irruption was the thing that wiped out her homeland before Bant), Elspeth takes the reins of finishing the abolition of the taint...and herself ceases to relent. In this scenario, she commandeers the purified Mirrodin, turning it into an anti-Phyrexia of sorts. As in, she binds it to never concern itself with anything but finding and destroying further Phyrexian intrusions in every last reach of Dominia. You want to worry about something else? RUN, INFIDEL.
 * I like that. I like that very much.
 * Something to note, There was a Pure White bad guy in Torment during Odyssey, named Kirtar, Also there was a Church in the Ice Age storyline that was also White.
 * Radiant was also a Pure White bad guy (sort of).
 * As was daimyo Konda.
 * Come to think of it, "Evil White Elspeth" could probably turn out very similar to the Phyrexian Flesh Singularity cult.
 * Your forgot Blue/Green - like Simic, only with sociology.
 * Er... What about White/Red?
 * Easy. Mark Rosewater identifies V and The Punisher as W/R; all you have to do is imagine Elspeth as similar to them in methods.

Unlike energy in our world, Mana is not subject to a law of conservation.
This is somewhat obvious. While in our world, energy can neither be created nor destroyed, in the MTG multiverse, mana is produced from lands all the time, which some time later just untap to produce Mana again. Not only that, but also Mana can be used to produce more Mana. Examples here would be Dark Ritual. Sometimes Mana is even produced seemingly out of nowhere, for example Black Lotus. Also, Mana can even vanish if it remains unused. Plus, there are even card combinations that produce infinite mana (like Tidewater Minion + Freed from the Real + Izzet Boilerworks). (Note that while Mana isn't subject to a law of conservation, this doesn't mean that it behaves completely random.)
 * There are analogues to most of these in terms of energy: the ecosystem receives constant energy from the sun, we have ways to invest a small amount of energy to receive a larger amount of energy (like lighting a coal fire with a spark, or splitting atoms for nuclear energy), and if energy isn't put to use or stored, it goes to waste. This doesn't violate the law of conservation, as the energy doesn't actually get created or destroyed; however, its accessibility and usefulness change. The only missing analogy is infinite mana combos...)

Reasons for Action to be Mirrodin Pure

 * Generally, Magic: The Gathering has happy endings
 * Phyrexia getting such a strong foothold again has terrible implications for the whole multiverse.
 * Phyrexia winning would be the third time the bad guy's have won since the reforms of the Time Spiral block.

Reasons for Action to be New Phyrexia

 * To be symmetrical: Scars of Mirrodin had a 80:20 Mirrodin:Phyrexian ratio, Mirrodin Besieged was 50:50, so New Phyrexia could be 20:80, with Mirrodin Overrun.
 * As such major adverasries, allowing Mirrodin to serve as their base would allow Phyrexia to be threatening again.
 * Confirmed: "Action" is New Phyrexia.

Action will be New Phyrexia and Mirrodin Pure

 * In a last desperate act of survival to hold the line, the Mirrin's tear their remaining area away to form a separate plane, a 'Pure Mirrodin'. With the majority of old Mirrodin controlled by Phyrexia, it forms the New Phyrexia, where each color fights to see its own way of advancing the goal win primacy, while the unlucky left behind can not hope to survive.
 * This allows Wizards to avoid picking a side, while letting both sides claim to have won. Mirrodin supporters claim the victory of survival, while Phyrexia supporters point out they overran the plane.
 * But didn't they say it will be one or the other but not both?
 * Shot down. It'll be New Phyrexia.

We will see a future set or even block with emphasis on Enemy Color Triples.

 * No real evidence, but we have seen a high emphasis on Enemy Color Pairs (or Color Pairs in general) in the Ravnica and Shadowmoor blocks, and an emphasis on Ally Color Triples with one central color and it's two "allies" (like white/blue/green) in the Alara block, but Enemy Color Triples with two allied colors and their respective shared enemy (for example blue/green/red) are still more or less undiscovered territory, so maybe we will see something in this direction in the future. Or at least it would be cool.
 * The commander decks seem to be this.

They will be a New Kamigawa setting.

 * Scars of Mirrodin is more of a Remake of Mirrodin set. So it be fiting by have New Kamigawa Setting.
 * Please, no. But I could see a New Ravnica setting... with each of the guilds getting into a third color. It would also fit my WMG above about Enemy Color Triples.
 * I like to Point that Commander Series have all the Enemy Color Triples in them.
 * You Know...
 * Actually, I can see the potential plot for returning to Kamigawa. It would have to involve the return of Myojin of Night's Reach and her return to kamigawa and adapting to life there after so long.
 * Two other Ideas I just though up for bringing back Myojin of Night's Reach: 1. the have a plot for a block which includes her finding her mask and/or beating the shit out of Bolas and 2. In a future plot line, we find out she is a planeswalker.
 * Newest blue Planeswalker from Avacyn Restored is a Soratami, so Wot C haven't forgotten about Kamigawa, maybe after Return to Ravnica block there will be a set featuring her returning to Kamigawa after solving the mystery of Innistrad's moon. Nichol Bolas will probably be the Big Bad as he has a grudge against the place and once ruled it, Phyrexia and Eldrazi don't feel as "right" as antagonists for the set.

They will also be a New Ravnica setting.

 * It would be Nice the see the Guilds again.
 * And Maybe With each of the guilds getting into a third color.
 * That would shift the number of guilds to 8, if my very poor grasp of math is right.
 * There are ten possible Three-Mana-Combinations. Five with three neighbouring colors (like the five Shards of Alara) and five with two neigbouring and one opposing color (like in the five Commander sets).
 * Oh Yes. It's called Return to Ravnica.
 * Ral Zarek from the 2012 Duels of the Planeswalkers game may get printed.

Otaria used to be part of Rath.

 * Think about it. Despite being a continent the size of Australia, it was never even mentioned until after the Invasion, and the only major non-Barbarian Tribe human civilisation is Black-aligned. It's not naturally part of Dominaria; it was a continent on Rath that became part of Dominaria after the Overlay, much like Skyshroud Forest and the Stronghold.

2014 will have another UN-Set.
You just know it well have another UN-Set.

Venser is a Timelord.
I'm Sorry, It just isn't WMG without One.


 * Well, he does look like the Tenth Doctor...
 * Mark Rosewater confirms that that's a coincidence.
 * Even the fact that Venser's power involves time and space?
 * There is NO WAY the parallels between Venser and the Tenth Doctor could be mere coincidence. Just look at their respective deaths. Tenth Doctor: Sacrifices himself to save a friend, subsequently dies of radiation. Venser: Gets sick of Phtisis, which is essentially the Magic: The Gathering equivalent of radiation, then sacrifices himself to save a friend (Karn).
 * Nope, it's Jossed as Jossed can be.

Karn is a Timelord
Seeing as, you know, he's actually traveled through time and all.

Kamigawa will be invaded by the Phyrexians
You know you want it.
 * So, Ninjas vs. Phyrexians?...that's AWESOME!
 * How about Samurai, Ninjas and Kami Vs. Phyrexians?
 * And then, guess who shows up? Toshiro Umezawa. No, wait, he's now going by the name Toshiro the Blind!
 * Toshiro is long dead by the current time period since the night that Konda took Kyodai(the real name of that which was taken) was the same night as Urza setting of the Sylex and becoming a planeswalker at the end of the brothers war which is 3300+ (3300 as of time spiral) years ago.
 * Either way, Kamigawa might be facing millions upon untold millions of monsters, but those monsters will be facing the gods.

Ravnica will be invaded by the Phyrexians
And you so know you want this too.

The Mirran resistance is going to invade other planes
Because they want to remake the mirrodin by conquering other plane, and turn it like Mirrodin was before Phyrexians

The Mirran Resistance is going to take refuge on Alara.
Esper would welcome them with open hands. Of course, that could mean if one of them is infected, they could be sowing the seeds of Esper's downfall...

Urabrask will turn on the rest of New Phyrexia.
He resents the monolithic and repressive structure of New Phyrexia, and lets the Mirran resistance take up residence in the Furnace Layer, so long as they don't get too uppity. Eventually, one of the other Praetors (possibly Jin-Gitaxias or Sheoldred) is going to call him out on his negligence and non-cooperation, causing Urabrask to turn the wrath of the Quiet Furnace on the other four, ushering in a Phyrexian Civil War.
 * I see Jin-Gitaxias and Elesh Norn turning on him, what with being enemy colours to Urabrask's red.

Urza is going to be resurrected.
By Mirrans and Karn (who can save Urza with his timetraveling) to fight Phyrexians. And it will be awesome.
 * By extension, the Phyrexians will bring back Mishra who was the only person to fight Urza on even terms for a long period, giving us a brother's war on a multiversal scale.

Ravnica-related guess: Svogthir is still around.
His apparent destruction in the Dissension novel is strangely "off-screen". And he has managed to escape death before.

The Slivers will conquer a world.
Then, if the Phyrexians find out how to planeswalk, they'll try to conquer the Hiveworld similar to the way they did Mirrodin. And it will be a catastrophic failure.
 * Maybe the slivers would like to take Sarpadia from the thrulls first...?
 * Last thing the Phyrexian's need is a hivemind that brings Urabrask back into line and compels Vorinclex to think about strategy instead of frolicking in the woods.

Lunarch Mikaeus knows where the Archangel Avacyn went.
He's the one who made her "disappear" to pave the way for the demon Griselbrand's return.


 * Jossed, we know how she disappeared, he's a not in a state to give a damn and Avacyn is coming back with Griselbrand, hence the whole Avacyn Restored set.

Avacyn is neither an angel nor a demon.
She's actually a completely different kind of supernal being. The closest analogy for my hypothesis is a...whatever the singular for Grigori is (Grigorus?). She'll be both white AND black, and arranged for Innistrad to be a kind of factory for agonized spirits. She needs the geists and demons for the purpose of creating nephilim, like the ones that were stuck on Ravnica. On top of that, Griselbrand is just her simulacrum for the purpose of manipulating the demons and devils...And yes, the angels too are manipulated. Only the most luckless of geists and her freshly-forged nephilim know the truth of her grigorus nature...

Garruk will be cured, be killed, or permanently become a monster.
Because next time he shows up, there won't be double-faced cards to represent the dual nature.
 * Or he becomes the first G/B planeswalker?

If Garruk is cured, he will make a deadly enemy of Sorin Marakov before he leaves.
If he beats Liliana and breaks her curse, Lil still has way bigger fish to fry than the big galoot with an axe, so the rivalry would seem fairly one-sided there. But it's likely not coincidence that Garruk, the hater of civilized deceit, is in the stomping grounds of vampire nobles, who'd represent everything he hates in one convenient package; if Garruk makes good on his intent to help the humans once he's cured of his own curse, he could end up SEVERELY pissing off the Vampire clans, including the planeswalker that had just returned home from a rather trying encounter with another green 'walker to find some asshole trying to burn his house down.
 * For some reason, this makes me think Sorin will turn into a Captain Planet villain.
 * Partly Jossed as Sorin is in bad terms with the other vampires and so if Garruk pisses them off he will probably not care much. However, the possibility of Garruk pissing Sorin off in some other way is still open.

Griselbrand is one of the demons Liliana owes her soul.
Why else would she show up in Innistrad with the veil?
 * See.
 * I Knew It!!!!

There will be two new Phyrexian factions.
Both will seek to end the divisiveness of New Phyrexia by combining the five suns but one will want to make the new son colorless while the other will want to make it combine all the colors.

Wizards of the Coast will release a block focusing on the Mons genre.
It will include:
 * A new plane (obviously).
 * Or Dominaria, we haven't been back there for a while.
 * Old species/subtypes being interpreted as mons.
 * As opposed to how players currently interpret and play all creatures as if they were mons?
 * Each mana color acting as an elemental type.
 * Doesn't this already exist to some extent?
 * The return of some older, long forgotton creature subtypes.
 * Such as Riggers and Kobolds?
 * Possible references from Monster Ranchers, Pokemon and Digimon.
 * No Monster Hunter?