Make Kalista's E have the same mechanic as Tahm's E

Except for the enemy only, make it so as she continues to stack her Rend that it shows you how much damage it is going to do to you, right now it's vague as all hell how much damage she's going to ultimately do to you so what looks like a close or winning fight instantly turns into a death from her pressing one button without you knowing that you're in mortal danger and taking measures against it.