Sorcerous Spyglass is a special Artifact card from Time Spiral Remastered (TSR), collector number 401. Current market price: $0.29 (foil $1.40), TCGplayer market prices via Scryfall.
As this artifact enters, look at an opponent's hand, then choose any card name. Activated abilities of sources with the chosen name can't be activated unless they're mana abilities.