Sword of Light and Shadow is a rare Artifact — Equipment card from Darksteel (DST), collector number 149. Current market price: $12.18 (foil $25.68), TCGplayer market prices via Scryfall.
Equipped creature gets +2/+2 and has protection from white and from black. Whenever equipped creature deals combat damage to a player, you gain 3 life and you may return up to one target creature card from your graveyard to your hand. Equip {2}