Let Kog'Maw eat things
Innate - Hunger Never Sleeps: Whenever a champion dies near Kog'Maw, they leave behind Delicious Snacks for ten seconds. If Kog'Maw collects Delicious Snacks, he recovers (amount) health and mana. Additionally, picking up Delicious Snacks refreshes the cooldown on Bio-Arcane Barrage and removes the Living Artillery debuff.
Probably the biggest disconnect between Koggy's lore and his gameplay is the fact that he never eats anything. This Innate remake would solve that problem while also addressing two of the biggest barriers to Kog's success on Rift, his crippling mana issues and his woefully inadequate up-time on his W. Due to Kog's habit of eating anything, allowing him to nom dead allied champions would make sense. It also fits well with the 'kill Kog first' imperative that his presence on a team sets. However, if need be, it could be restricted to enemy champions only.
all have Innates like this.