Mirri the Cursed is a rare Legendary Creature — Vampire Cat card from Time Spiral Remastered (TSR), collector number 125. Current market price: $0.60 (foil $1.13), TCGplayer market prices via Scryfall.
Flying, first strike, haste Whenever Mirri deals combat damage to a creature, put a +1/+1 counter on Mirri.