Bloodthirsty Blade is a uncommon Artifact — Equipment card from Game Night: Free-for-All (GN3), collector number 114. Current market price: $0.39, TCGplayer market prices via Scryfall.
Equipped creature gets +2/+0 and is goaded. (It attacks each combat if able and attacks a player other than you if able.) {1}: Attach this Equipment to target creature an opponent controls. Activate only as a sorcery.