Katara, Heroic Healer 
Legendary Creature — Human Warrior Ally
Lifelink (Damage dealt by this creature also causes you to gain that much life.) When Katara enters, put a +1/+1 counter on each other creature you control.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL