Defense of the Heart is a rare Enchantment card from Judge Gift Cards 2016 (J16), collector number 7. Current market price: — (foil $78.61), TCGplayer market prices via Scryfall.
At the beginning of your upkeep, if an opponent controls three or more creatures, sacrifice this enchantment, search your library for up to two creature cards, put those cards onto the battlefield, then shuffle.