So about Kalista changes on PBE
I definately can see this change helping quite a bit. Especially with CS'ing early game. No idea how many CS I miss due to miscalculating damage cause of stupid passive.
Rend: Mana refund 2 Minions => 1 Minion killed with Rend.
I would still like to see the annoying Rend CD bug fixed where if you Rend mid auto attack it causes mid air auto's to Rend directly after they hit the target that cause Rend to go on CD. Very annoying.