Whims of the Fates is a rare Sorcery card from Born of the Gods (BNG), collector number 115. Current market price: $0.26 (foil $0.49), TCGplayer market prices via Scryfall.
Starting with you, each player separates all permanents they control into three piles. Then each player chooses one of their piles at random and sacrifices those permanents. (Piles can be empty.)