Everything wrong with Anivia:

EVERYTHING.

Oh wait, you want specifics. Okay, let's see.

• skill shot way too slow
• mana costs way too high
• cooldowns slightly too long
• passive revive time way too long
• passive cooldown too long
• CC constantly canceled mid-flight by enemy CC
• range too low
• zero mobility
• base stats too low
• early game too weak
• way too item dependent
• too easily countered
• damage requires too much setup