Rough Rhino Cavalry is a common Creature — Human Mercenary card from Avatar: The Last Airbender (TLA), collector number 152. Current market price: $0.10 (foil $0.21), TCGplayer market prices via Scryfall.
Firebending 2 (Whenever this creature attacks, add {R}{R}. This mana lasts until end of combat.) Exhaust — {8}: Put two +1/+1 counters on this creature. It gains trample until end of turn. (Activate each exhaust ability only once.)