Jeong Jeong, the Deserter

Two abilities that reward the same aggressive turn from different directions. Firebending banks a red mana on attack, but that mana empties at end of combat, so it is combat-phase fuel: it helps pay the for the Exhaust ability, or an instant-speed effect, in the window it is alive. The Exhaust ability does not tap this Human Rebel, which is the whole point of the sequencing. You can swing, generate red, and spend it activating Exhaust in the same turn, dropping a +1/+1 counter now and priming your next Lesson to copy. That copy clause is what elevates a 2/3 beater with a mana rider into something worth building around: Lesson spells are toolbox effects fetched from outside the game, so copying one resolves the same card's effect twice, and the "choose new targets" allowance lets you split the value across the board (two removal shots, two draws, two pumps landing wherever they matter most). The exhaust framing is the balancing wrinkle here: the counter and the copy trigger fire exactly once, so this is one decisive turn rather than a repeatable engine. Line up the Lesson and the attack on the turn you spend the exhaust, and everything cashes out together; miss the alignment and the activation is spent for nothing but a 2/3 with a single extra counter. Firebending keeps the body relevant while the plan comes together, its mana a small subsidy toward the same turn's investment rather than a separate line of play.