Anivia vs Katarina Mid Matchup
Anivia Mid wins 51.8% of 882 Low Elo games against Katarina Mid, +1.1 points vs expected, 2-patch window 26.19-26.20.
Researched on LoL patch 26.20. Tips are written to hold at any rank; stats come from Low Elo ranked games up to patch 26.20.
How to play as Anivia
Save Flash Frost(Q) until Katarina commits with Shunpo(E), and use Crystallize(W) to interrupt Death Lotus(R) if she channels.
Shove the wave when safe and ping Katarina's roams; Anivia players warn that she can create pressure by leaving lane even when the direct matchup is manageable.
Crystallize(W)'s displacement can interrupt Katarina's Death Lotus(R) channel.
Sources
These notes come from r/AniviaMains and LoL Wiki, checked against the champions' abilities.