Excogitator Sphinx 
Creature — Sphinx Detective
Flying
Whenever one or more creatures you control deal combat damage to a player, investigate.
, Sacrifice a Clue: Seek an instant or sorcery card.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL