Avengers: Under Siege is a rare Enchantment — Saga card from Marvel Super Heroes (MSH), collector number 205. Current market price: $0.28 (foil $0.36), TCGplayer market prices via Scryfall.
(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Create two 2/1 black Villain creature tokens with menace. II — This Saga deals 2 damage to each non-Villain creature and each opponent. III — Create a Treasure token for each Villain you control.