Alien Invasion is a rare Enchantment card from Marvel Super Heroes (MSH), collector number 200. Current market price: $0.27 (foil $0.33), TCGplayer market prices via Scryfall.
At the beginning of combat on your turn, create a 1/1 red Alien creature token with haste and "This token attacks each combat if able." Put a +1/+1 counter on it for each invasion counter on this enchantment, then put an invasion counter on this enchantment.