Holy good god RIOT. Kalista can just spam smart attack move backwards to kite like a Challenger?!
THIS NEEDS A HOTFIX RIGHT NOW.
There is no way this can be intentional.
You need to make it so she MUST right click to do it otherwise she will never be balanced.
Wanna know why she's OP and imbalanced? This is it right here. This one aspect of her kit.
I've been honing my kiting skills for YEARS from Starcraft, through DotA, HoN, and LoL and I have never seen anything this stupid in my entire gaming career. This spits in every skilled player's face that has ever played this game to get better at it. If it's intentional, seriously have your balance team fired on the spot because I have no words left.