Stalwart Speartail 
Creature — Dinosaur
Enrage — Whenever Stalwart Speartail is dealt damage, other Dinosaurs you control and Dinosaur cards in your hand and library perpetually get +1/+1. Whenever Stalwart Speartail attacks, Stalwart Speartail deals 1 damage to each creature and each planeswalker.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL