Avalon: Web of Magic

Avalon: Web of Magic is a series of children's fantasy novels written by Rachel Roberts, loosely based on the ideas from Princess Gwenevere and the Jewel Riders. The first installment, Circles in the Stream, was originally published in 2001. After its publisher went out of business in 2005, without publishing the last two books, the series was in limbo until Seven Seas Entertainment picked it up in late 2006. Seven Seas republished all twelve books, revised by the author and with new covers and illustrations. The series has also been adapted into a three-volume OEL manga.

According to the website, "Avalon: Web of Magic is a sweeping series of young adult fantasy novels...[that] features a magical and adventurous storyline, with positive messages...[and] supports a continuing story arc starring three teenage girls and their animal friends, that centers on themes of friendship, triumph over adversity and love for nature." (TL;DR: Three twelve-year-old girls find magic jewels, bond with magical animals, and become mages who must defend Earth and the magical worlds from a power-hungry Big Bad. This boils down to trying to find the lost home of all magic, Avalon, before the Big Bad does...They eventually fail...at first)

Basically, take any Magical Girl show, subtract the cute costumes, transformation sequences, and monster-of-the-week format, and add a green theme and loads of cute fuzzy animals.

The books in the series are:

Circles in the Stream
All That Glitters
Cry of the Wolf
Secret of the Unicorn
Spellsinger
Trial By Fire
Song of the Unicorns
All's Fairy in Love and War
Ghost Wolf
Heart of Avalon
Dark Mage
Full Circle

The following tropes are common to many or all entries in the Avalon: Web of Magic franchise.
For tropes specific to individual installments, visit their respective work pages.

All Girls Like Ponies: The series is littered with Pegasi, Elemental Horses, Night Stallions and loads of Unicorns on top of the regular horses.
Alpha Bitch: Kara is a subversion. She's a popular blonde cheerleader fashionista with a catty girl posse, but Kara herself isn't exactly cruel, and she gets some depth and character development as the series goes on.
Because Destiny Says So: The Prophecy about Avalon and the mages.
Big Bad: The Dark Sorceress, and the Spider Witch to a lesser degree.
Big Badass Wolf: The Mistwolves.
Blonde, Brunette, Redhead: Kara, Adriane (black), Emily (auburn).
Body Horror: Being exposed to too much Dark magic will do this.
Brainwashed and Crazy: Happens to the trio in multiple occasions. Emily got the furthest.
Call a Rabbit a Smeerp
Costume Porn: They don't always dress up elaborately, but going by how the book gives descriptions, it seems like everything they wear is pimped out.
Dark Is Not Evil: The shadow creatures and the denizens of the Otherworlds aren't necessarily evil.
Darker and Edgier: As the books progress the themes and situations get more and more intense, if not downright disturbing for children's books
Demoted to Extra: Zach had a big role in Cry of the Wolf and it seemed he would be important from then-on, but he hasn't shown up much or done anything important since then. He may play a bigger part in Shadow Warrior, but this has yet to be seen.
Disney Death: Stormbringer, as we find out in Ghost Wolf.
- And Ozzie in Dark Mage.
Doomy Dooms of Doom: Minor example: Tweek labels a pie chart 'The Pie Chart of Doom'.
Downer Ending: In Dark Mage, Ozzie dies, Emily turns evil, the Dark Sorceress enters Avalon and closes the Gates behind her, and the Spider Witch re-weaves the web so she can control it. Yeah, that qualifies.
Dramatic Unmask: With the Forest Prince.
Elemental Rock-Paper-Scissors: Time apparently has no weakness.
Elements of Nature: Become a big deal when hitting Level Two.
Face Heel Turn: Emily at the end of Dark Mage.
- Silvan after their group was betrayed and she turned into the Spider Witch.
Fake Band: B* Tween, who were Defictionalized when some of "their" songs were released in the early 2000s to promote the book series.
Fantastic Science: For a fantasy world, there's quite an number of research laboratories.
Forgot About His Powers: Adriane and Kara supposedly learned to play nice and get along in Spellsinger, when their bickering (caused by magical mind control) almost let the bad guys win. In Dark Mage, when they have yet another fight, neither considers that the other is being mind-controlled (surprise: both are), and they're too busy fighting with each other to stop the Big Bad from winning for real.
Freudian Trio: The three main characters: Kara is the Id, Adriane is the Superego and Emily is the Ego.
Genre Blindness: Does anyone ever say "Gee guys, Character X is sure acting strangely. I wonder, since we're in a story where mind control magic and shapeshifters exist, if they're under some sort of spell or are being impersonated by a monster in disguise."? No. Never.
Go Out with a Smile: Gardner and Lucinda.
The Heartless: The shadow creatures.
Jerk with a Heart of Gold: Kara, Adriane, and Zach when he first shows up..
Lighter and Softer: The manga adaptation.
Magic Genetics: Magical ability can skip a generation, and you can be descended from someone who apparently never had kids (or had them very young).
Magic Music: Spellsinging.
Magical Native American: Gran, with her fortune cookie sayings. Her granddaughter Adriane too, being the warrior, who bonds with wolves, can travel the astral planes in spirit form, and her element is earth.
Magitek: Employed by the Big Bad as well as Tasha and Logan.
Miles Gloriosus: Gwyx.
Mind Rape: Done a lot by the Dark Sorceress, although they all fail when she tries to turn the mages into the Dark Mage. The Spider Witch succeeds where she failed.
Moe Stare: Everyone but Adriane in the manga. At least until she got hit by a love spell.
Mother Nature, Father Science: The manga. Nature-and-emotions mage magic (practiced by the three female main characters) vs. logic-and-precision Warlock magic (practiced by the male Donovan). Of the two male mages in the novels, one never shows up in the manga at all and the other is just the comic relief sidekick.
- And in the books, there's the arcane arts. Essentially the same as warlock magic.
Musical Episode: Spellsinger.
Orwellian Retcon: Switching publishers to Seven Seas Entertainment let the author fix some of the problems with the series. The last two books avert this by not being published before the previous publisher went belly-up.
The Power of Friendship
Random Power Ranking: In general, mage power ranking apparently only goes up to two in practice and a theoretical level three.
Ridiculously Cute Critter: A lot of the magical animals in the series are like this.
Screw Destiny: The mages finally decide this in Full Circle, but only after the fact.
Shout-Out: Many. But the best one has got to be the magic closet in the Fairy Realms. It's basically like the Construct in The Matrix that produces all the guns, only with clothes.
- "More cowbell!" in the third manga.
Super Smoke: The aptly named mistwolves all share this ability.
Teen Idol: Johnny Conrad, in-series.
The Three Faces of Eve: Kara is childish, Emily is sensible and Adriane is dark.
Tonight Someone Dies: Stormbringer.
What the Hell, Hero?: Everyone else's reaction to Kara's shopping-trip-in-the-middle-of-a-crisis in Dark Mage.