Planeswalker's Scorn is a rare Enchantment card from Planeshift (PLS), collector number 52. Current market price: $0.28 (foil $1.64), TCGplayer market prices via Scryfall.
{3}{B}: Target opponent reveals a card at random from their hand. Target creature gets -X/-X until end of turn, where X is the revealed card's mana value. Activate only as a sorcery.