Interdimensional Web Watch is a rare Artifact card from Marvel's Spider-Man Promos (PSPM), collector number 165s. Current market price: — (foil $1.34), TCGplayer market prices via Scryfall.
When this artifact enters, exile the top two cards of your library. Until the end of your next turn, you may play those cards. {T}: Add two mana in any combination of colors. Spend this mana only to cast spells from exile.