Primeval Protector 
Creature — Avatar
This spell costs 
less to cast for each creature your opponents control.
When this creature enters, put a +1/+1 counter on each other creature you control.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL