Infernal Pet 
Creature — Imp
Whenever you cast your second spell each turn, put a +1/+1 counter on this creature and it gains flying until end of turn.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Creature — Imp
Whenever you cast your second spell each turn, put a +1/+1 counter on this creature and it gains flying until end of turn.