Ghastly Discovery is a common Sorcery card from Shadowmoor (SHM), collector number 39. Current market price: $0.13 (foil $1.14), TCGplayer market prices via Scryfall.
Draw two cards, then discard a card. Conspire (As you cast this spell, you may tap two untapped creatures you control that share a color with it. When you do, copy it.)