Jioni, Bioclastic Hybrid

Ward—Discard a card. (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player discards a
card.)

Whenever another creature you control mutates, create a 1/1 green Ooze creature token, then put a
+1/+1 on each other creature you control.

Each creature spell you cast costs {1} less to
cast if it has mutate.