Corpse Traders is a uncommon Creature — Human Rogue card from Avacyn Restored (AVR), collector number 90. Current market price: $0.12 (foil $0.36), TCGplayer market prices via Scryfall.
{2}{B}, Sacrifice a creature: Target opponent reveals their hand. You choose a card from it. That player discards that card. Activate only as a sorcery.