Ikari was panting in exhaustion as well after taking a Counter attack.  "Ikari, finish Valkyrie off with Dragon Claw!"  The shiny Bagon mustered up the energy for her next attack and before she started charging again she let off a bright glow, signifying that she was evolving.  Her body morphed into a spherical shape with four stump-like legs and when the glow subsided there stood a green-tinged Shelgon that started running at Valkyrie.  Shiranui scanned Ikari's new form with his Rotom Phone.  "[i]Shelgon, the Endurance Pokémon.  A Dragon type and the evolved form of Bagon.  Shelgon ignores its hunger entirely, never eating any food.  Apparently, Shelgon will evolve once all its energy stores are used up.[/i]"