Jeong Jeong, the Deserter [TLA-0142]

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

Exhaust — 3: 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.)