Gigantoplasm 
Creature — Shapeshifter
You may have this creature enter as a copy of any creature on the battlefield, except it has "
: This creature has base power and toughness X/X."
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL