Pokémon - Season 15 Episode 29 Evolution by Fire! Gotta catch 'em all!
Overview: Stopping at Abtilbe Town's Battle Club, Ash meets his Tepig's former trainer Shamus who abandoned Tepig because he felt he was too weak. Angry, Ash challenges Shamus to a double battle with Snivy and Tepig going up against Shamus's Emboar and Heatmor.