Dawnbringer Charioteers 
Creature — Human Soldier
Flying, lifelink Heroic — Whenever you cast a spell that targets this creature, put a +1/+1 counter on this creature.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL