Iroh, Dragon of the West — Avatar: The Last Airbender Eternal #194

Haste

Mentor (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 . This mana lasts until end of combat.)