The Ooze - Teenage Mutant Ninja Turtles - 177

Legendary Artifact

Mana Cost: {2}

Whenever a creature you control with a +1/+1 counter on it leaves the battlefield, create a Mutagen token for each +1/+1 counter on it. (A Mutagen token is an artifact with "{1}, {T}, Sacrifice this token: Put a +1/+1 counter on target creature. Activate only as a sorcery.")
{T}: Exile target card from a graveyard. Create a Mutagen token.

Rare · Teenage Mutant Ninja Turtles · #177 (TMT)

Illustrated by Gabriel Tanko