The Roaring Toeclaws 
Legendary Creature — Dinosaur
Whenever The Roaring Toeclaws or another creature you control with mana value five or greater becomes untapped, put +1/+1 counters on it equal to its power.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL