The Masters of Evil is a uncommon Legendary Creature — Human Villain card from Marvel Super Heroes (MSH), collector number 105. Current market price: $0.17 (foil $0.32), TCGplayer market prices via Scryfall.
Other Villains you control get +2/+1. {1}{B}, Discard this card: Search your library for a Plan card, reveal it, put it into your hand, then shuffle.