Riot, you need to face the fact that buffing kassadin multiple patches in a row fucking broke him
http://na.op.gg/champion/kassadin/statistics/mid
Champ is fucking nutty, and he basically can reaches late game on just ROA archangels alone.
Here are his stupid changes that brought him to this state.
V8.17
Riftwalk Riftwalk Cooldown reduced to 5 / 3.5 / 2 seconds from 6 / 4 / 2.
V8.15
Nether Blade Nether Blade BUG FIX: On-hit SFX have been restored.
V8.13
Nether Blade Nether Blade NEW EFFECT: Now has a mana cost of 1. Active AP ratio increased to 80% AP from 70% AP. Force Pulse Force Pulse AP ratio increased to 80% AP from 70% AP. Riftwalk Riftwalk AP ratio increased to 40% AP from 30% AP.
V8.9
Null Sphere Null Sphere Base shield strength increased to 60 / 85 / 110 / 135 / 160 from 40 / 70 / 100 / 130 / 160.
The fact that you gave his rotation 30% MORE AP scaling and 5x easier tear stacking AND THEN STILL BUFFED HIM IN A LATER PATCH is fucking criminal.
P.S.
His ban rate also went up by around 1500%, congratulations. It surpassed 60% after being at around a 4% ban rate for numerous patches. It's safe to say that Kassadin is beginnnig to completely warp the game around him, whether it means being forced to ban him or climbing the ridiculous uphill battle of facing him because his numbers are just ludicrous.