Cacophodon

Most Enrage dinosaurs convert incoming damage into something offensive: a counterattack, a burn trigger, a token. This one points the payoff somewhere stranger. Untapping a permanent the moment combat hits it is a deceptively flexible reward, because the value lives entirely in what you choose to untap. A mana rock or land refills your resources mid-combat. A creature that already attacked or blocked is suddenly available again. A second blocker stands back up after the first trade. The 2/5 body is the engine that makes this repeatable: five toughness means it survives most of the damage that would set off lesser dinosaurs, so it can sit in front of attackers turn after turn, eating hits and handing you an untap each time. The trigger does not even require combat; any source of damage, including your own pingers, spins the wheel. That open-ended targeting is the design tension here: a damage-as-resource creature whose ceiling depends on having a permanent worth untapping at instant speed, and whose floor is a sturdy green wall that wastes the ability untapping itself. It is built less as a beater than as a slow value loop, a creature that rewards setting up something to point the untap at before the damage arrives.