Sword of Fire and Ice is a rare Artifact — Equipment card from Darksteel (DST), collector number 148. Current market price: $46.08 (foil $76.98), TCGplayer market prices via Scryfall.
Equipped creature gets +2/+2 and has protection from red and from blue. Whenever equipped creature deals combat damage to a player, this Equipment deals 2 damage to any target and you draw a card. Equip {2}