Astonishing Spider-Man is a rare Legendary Creature — Spider Human Hero card from Marvel Super Heroes Commander (MSC), collector number 740. Current market price: $0.92 (foil $4.47), TCGplayer market prices via Scryfall.
Reach Whenever Astonishing Spider-Man attacks, you may discard your hand. If you do, draw a card for each card you've discarded this turn.