Blackmail 
Sorcery
Target player reveals three cards from their hand and you choose one of them. That player discards that card.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Sorcery
Target player reveals three cards from their hand and you choose one of them. That player discards that card.