Splinter, the Mentor (0003) (Borderless) [TMC - 3]

Rarity: M #: 3 Creature Type or Sub Type: Legendary Creature — Mutant Ninja Rat P: 2 T: 2 Rules Text Contains: Menace Whenever Splinter or another nontoken creature you control leaves the battlefield, create a Mutagen token. Partner—Character select (You can have two commanders if both have this ability.) Flavor: "We choose what holds us back."