Plated Onslaught is a uncommon Instant card from Phyrexia: All Will Be One (ONE), collector number 29. Current market price: $0.21 (foil $0.11), TCGplayer market prices via Scryfall.
Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.) Creatures you control get +2/+1 until end of turn.