Kalista E vs Twitch E
Rend COST: 40 MANA COOLDOWN: 14 / 12.5 / 11 / 9.5 / 8
PASSIVE: Kalista's basic attacks and Pierce leaves her target speared for 4 seconds. There is no cap on the number of spears Kalista can lodge in her target. This passive is unavailable while Rend is on cooldown.
ACTIVE: Kalista rips all spears from nearby enemies, dealing physical damage and slowing them for 2 seconds. Spears beyond the first deal reduced damage. If Rend scores a kill, the cooldown is refreshed and refunds 20 mana for each target killed, up to 40 mana.
PHYSICAL DAMAGE: 20 / 30 / 40 / 50 / 60 (+ 60% AD)
DAMAGE PER ADDITIONAL SPEAR: 10 / 14 / 19 / 25 / 32 (+20 / 22.5 / 25 / 27.5 / 30% AD)
SLOW: 25 / 30 / 35 / 40 / 45%
Contaminate COST: 50 / 60 / 70 / 80 / 90 MANA COOLDOWN: 12 / 11 / 10 / 9 / 8
ACTIVE: Twitch damages all nearby enemies afflicted by Deadly Venom, dealing physical damage equal to a base amount plus bonus damage for each stack of Deadly Venom on an enemy.
BASE PHYSICAL DAMAGE: 20 / 35 / 50 / 65 / 80
BONUS DAMAGE PER STACK: 15 / 20 / 25 / 30 / 35 (+ 20% AP) (+ 25% bonus AD)
MAX PHYSICAL DAMAGE: 110 / 155 / 200 / 245 / 290 (+ 120% AP) (+ 150% bonus AD)
Kalista E have more base damage (Since it scale off AD), have more damage per stack, better radio (It's max AD and not bonus) , a refresh cooldown and mana refund and if it's not enough also slow all target afflicted. It's better in EVERY WAY if we compare it to twitch E. But well i guess this game is balanced :)