Bladehold War-Whip is a uncommon Artifact — Equipment card from Phyrexia: All Will Be One (ONE), collector number 280. Current market price: $0.41 (foil $0.68), TCGplayer market prices via Scryfall.
For Mirrodin! (When this Equipment enters, create a 2/2 red Rebel creature token, then attach this to it.) Equip abilities you activate of other Equipment cost {1} less to activate. Equipped creature has double strike. Equip {3}{R}{W}