Zero Point Ballad is a rare Sorcery card from Edge of Eternities (EOE), collector number 335. Current market price: $0.50 (foil $1.05), TCGplayer market prices via Scryfall.
Destroy all creatures with toughness X or less. You lose X life. If X is 6 or more, return a creature card put into a graveyard this way to the battlefield under your control.