Vorpal Sword is a rare Artifact — Equipment card from Adventures in the Forgotten Realms (AFR), collector number 124. Current market price: $2.51 (foil $3.94), TCGplayer market prices via Scryfall.
Equipped creature gets +2/+0 and has deathtouch. {5}{B}{B}{B}: Until end of turn, this Equipment gains "Whenever equipped creature deals combat damage to a player, that player loses the game." Equip {B}{B}