Mysterious Egg 
Creature — Egg
Whenever this creature mutates, put a +1/+1 counter on it.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Creature — Egg
Whenever this creature mutates, put a +1/+1 counter on it.