Eriette of the Charmed Apple is a mythic Legendary Creature — Human Warlock card from Wilds of Eldraine (WOE), collector number 299. Current market price: $1.63 (foil $6.58), TCGplayer market prices via Scryfall.
Each creature that's enchanted by an Aura you control can't attack you or planeswalkers you control. At the beginning of your end step, each opponent loses X life and you gain X life, where X is the number of Auras you control.