Worldpurge is a rare Sorcery card from Shadowmoor (SHM), collector number 156. Current market price: $0.77 (foil $10.60), TCGplayer market prices via Scryfall.
Return all permanents to their owners' hands. Each player chooses up to seven cards in their hand, then shuffles the rest into their library. Each player loses all unspent mana.