Katarina rework?
Blizz said she was a team demolisher champion.. so she's suppose to be useful in teamfights.. the problem is she's too strong right now that she can 1v1 anybody as long as she isn't Feeding her ass off.. Here's how to fix her riot. You want her to be a team burst champ? You make it so her damage against 1 is VERY low.. and it will increase when more enemys come near her.. 5 being the max as thats the whole team.. that meaning it should be 100% damage So just make her weak and get stronger when more enemys are near her.