Scrying Glass is a rare Artifact card from Urza's Destiny (UDS), collector number 137. Current market price: $0.42 (foil $4.84), TCGplayer market prices via Scryfall.
{3}, {T}: Choose a number greater than 0 and a color. Target opponent reveals their hand. If that opponent reveals exactly the chosen number of cards of the chosen color, you draw a card.