Ghastlord of Fugue 
Creature — Spirit Avatar
This creature can't be blocked. Whenever this creature deals combat damage to a player, that player reveals their hand. You choose a card from it. That player exiles that card.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL