Fire Lord Zuko (Borderless) (Neon Ink Foil) [Avatar: The Last Airbender]

Cost: R W B Firebending X, where X is Fire Lord Zuko's power. (Whenever this creature attacks, add X R. This mana lasts until end of combat.)
Whenever you cast a spell from exile and whenever a permanent you control enters from exile, put a 1/ 1 counter on each creature you control.