Iroh, Dragon of the West (TLE) (194) / Extended Art

HasteMentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)At the beginning of combat on your turn, each creature you control with a counter on it gains firebending 2 until end of turn. (Whenever it attacks, add {R}{R}. This mana lasts until end of combat.)