Shadowspear is a rare Legendary Artifact — Equipment card from Theros Beyond Death Promos (PTHB), collector number 236p. Current market price: $39.07 (foil $36.60), TCGplayer market prices via Scryfall.
Equipped creature gets +1/+1 and has trample and lifelink. {1}: Permanents your opponents control lose hexproof and indestructible until end of turn. Equip {2}