Nettlecyst is a rare Artifact — Equipment card from Modern Horizons 2 (MH2), collector number 471. Current market price: $4.69 (foil $7.18), TCGplayer market prices via Scryfall.
Living weapon (When this Equipment enters, create a 0/0 black Phyrexian Germ creature token, then attach this to it.) Equipped creature gets +1/+1 for each artifact and/or enchantment you control. Equip {2}