Hint of Insanity 
Sorcery
Target player reveals their hand. That player discards all nonland cards with the same name as another card in their hand.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL
Sorcery
Target player reveals their hand. That player discards all nonland cards with the same name as another card in their hand.