Sword of War and Peace is a mythic Artifact — Equipment card from New Phyrexia (NPH), collector number 161. Current market price: $10.43 (foil $17.57), TCGplayer market prices via Scryfall.
Equipped creature gets +2/+2 and has protection from red and from white. Whenever equipped creature deals combat damage to a player, this Equipment deals damage to that player equal to the number of cards in their hand and you gain 1 life for each card in your hand. Equip {2}