Origin of the Avengers is a rare Enchantment — Saga card from Marvel Super Heroes (MSH), collector number 28. Current market price: $0.27 (foil $0.37), TCGplayer market prices via Scryfall.
(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I — Scry 2. II — You may put a Hero creature card with mana value 3 or less from your hand onto the battlefield. If you don't, draw a card. III — Put a +1/+1 counter on each creature you control.