Mona Lisa, Ever Adaptable

Legendary Creature — Lizard Mutant — {3}{G}

Whenever a player casts a creature spell, you create a Mutagen token. (It's an artifact with "{1}, {T}, Sacrifice this token: Put a +1/+1 counter on target creature. Activate only as a sorcery.")

Rarity: rare

EDHREC rank: 13515