Instant, 2UUG (5)

Counter target spell. Put an X/X green Ooze creature token onto the battlefield, where X is that spell's converted mana cost.

"The Simic can grow anything out of a puddle of sludge. I just hope they never join forces with the Golgari."
—Teysa Karlov, Grand Envoy of Orzhov

Illus. Mike Bierek