Sokka, Tenacious Tactician (#352)

Type: Legendary Creature — Human Warrior Ally

Text: Menace, prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Other Allies you control have menace and prowess.
Whenever you cast a noncreature spell, create a 1/1 white Ally creature token.

Set: Avatar: The Last Airbender (#352)