Kog'maw throws Acid
Cassiopeia throws Acid
Twitch throws Poison Casks


Caitlyn apparently got something?
Heimerdonger left Taric

Kayle appeared at end and killed Urgot. (Proof that it's Kayle according to Flavor Text.)
I want to say Kayle is a doctor / vigilante combo? She heals, can make target (or self) invulnerable, and kills things.

I'll be back later tonight.