Flash Frost ridiculously hard to land
I'm pretty sure it's at the very least tied for slowest moving skillshot in the game, and Anivia is supposed to be a ranged mage. I played Anivia mid recently and probably landed less than 8 Qs the whole game. I only managed to do well by playing ridiculously safe and never directly engaging, but only following up on someone else's engage, which meant I had to hide way back from Katarina during laning phase and have our jungler CC her before I could do jack shit. I get that having skillshots adds counterplay, but this one is just flat-out unreasonably hard to hit anything with. If you aim it right at someone from 2/3rds of the max range, if they have boots or high base movement speed, they don't even have to sidestep to dodge, they can just run backwards away from it and laugh as it explodes uselessly a mile away from them. I'm not saying make Anivia a ridiculous un-counterable harass monster, but her Q needs at least SOME kind of buff, either make it easier to land or make it more spammable, preferably the first.