The Ariana Black Series/YMMV

Crowning Moment of Funny: As the above-mentioned sporker points out, a bit of bad wording in an early fight scene indicates that Neville attacked Ron rather than Crabbe and Goyle, for some reason.
Mary Sue: Ariana, Ariana, Ariana!
- Black Hole Sue: Everything is about her. All the characters seem to think about is how *insert terrible thing here* could affect Ariana. Hell, Voldemort even gives up on Harry so he can attack her instead!
- Fixer Sue: Sirius Black is proven innocent with her help, and she convinces both Ron and Harry to tell Hermione and Ginny, respectively, that they love them. Later she flat-out tells Harry to propose to Ginny, and he does.
- Jerk Sue: Has shades of this, especially concerning her rival, Maria. Ariana claims Maria hates her guts, she's a bitch, etc., and yes, Maria does hate her, but most of their conflicts are either started or made worse by Ariana herself. (Also, Maria's abuse is mostly verbal, whereas Ariana constantly threatens to attack Maria with her powers. Which she knows could kill someone.)
- Purity Sue: Wise beyond her years, stunningly beautiful at age twelve, has super-rare powers, everyone she meets either loves her (the good guys/people the author likes) or wants to rape her (villains/people the author doesn't like).
- Relationship Sue: For Neville.
- Sympathetic Sue: God, whine, whine, whine...
- Thirty-Sue Pileup: Ariana, her friends, Maria and her friends, every damned Canon Character Ariana comes into contact with...
Ron the Death Eater: Ron himself is a bit dumber, but mostly spared. No, Draco gets hit with this worst, being turned from a relatively ineffectual jerk who eventually realized he wasn't cut out for the big leagues, to a pedophilic near-rapist.
Squick: Draco Malfoy lusting after and attempting to molest/rape a first-year.
They Just Didn't Care: At one point in the second story, Ariana outright admits she thinks she's better at everything than Maria, and that's the cause of Maria's jealousy. And yet the Author tries to claim she's not a Mary Sue...
Villain Decay: Voldemort goes from being, well,Volde'mort to the equivalent of a silly mustache-twirler in this fic.
Wangst: Dear lord, yes!