Illusory Ambusher 
Creature — Cat Illusion
Flash (You may cast this spell any time you could cast an instant.) Whenever this creature is dealt damage, draw that many cards.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL