Jeong Jeong, the Deserter — Avatar: The Last Airbender #142

Firebending 1 (Whenever this creature attacks, add . This mana lasts until end of combat.)

Exhaust — : Put a +1/+1 counter on Jeong Jeong. When you next cast a Lesson spell this turn, copy it and you may choose new targets for the copy. (Activate each exhaust ability only once.)