A-Demon's Due 
Instant
Look at the top four cards of your library. Put two of them into your hand and the rest into your graveyard. You lose 2 life.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL