Jenova, Ancient Calamity is a rare Legendary Creature — Alien card from Final Fantasy (FIN), collector number 346. Current market price: $5.30 (foil $9.15), TCGplayer market prices via Scryfall.
At the beginning of combat on your turn, put a number of +1/+1 counters equal to Jenova's power on up to one other target creature. That creature becomes a Mutant in addition to its other types. Whenever a Mutant you control dies during your turn, you draw cards equal to its power.