Cabal Interrogator is a uncommon Creature — Zombie Wizard card from Scourge (SCG), collector number 57. Current market price: $0.25 (foil $11.33), TCGplayer market prices via Scryfall.
{X}{B}, {T}: Target player reveals X cards from their hand and you choose one of them. That player discards that card. Activate only as a sorcery.