Jester's Sombrero 
Artifact
, 
, Sacrifice this artifact: Look at target player's sideboard, choose three cards from it, and remove those cards from the match.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL