Mage's Attendant 
Creature — Cat Rogue
When this creature enters, create a 1/1 blue Wizard creature token with "
, Sacrifice this token: Counter target noncreature spell unless its controller pays ."
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL