Keeper of the Secret Lair 
Legendary Creature — Merfolk Rogue
Flash
You may cast Secret Lair spells as though they had flash.
Secret Lair spells you cast cost less to cast.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL