Red-Hot Hottie is a common Creature — Elemental card from Unhinged (UNH), collector number 86. Current market price: $0.36 (foil $14.82), TCGplayer market prices via Scryfall.
Whenever this creature deals damage to a creature, put a third-degree-burn counter on that creature. It gains "At the beginning of each end step, sacrifice this creature unless you scream 'Aaah!' at the top of your lungs."