Biorganic Carapace is a rare Artifact — Equipment card from Marvel's Spider-Man (SPM), collector number 269. Current market price: $0.59 (foil $0.66), TCGplayer market prices via Scryfall.
When this Equipment enters, attach it to target creature you control. Equipped creature gets +2/+2 and has "Whenever this creature deals combat damage to a player, draw a card for each modified creature you control." (Equipment, Auras you control, and counters are modifications.) Equip {2}