Power Rangers: Season 12, Episode 38

12 - 38: Thunder Struck (2)

Zeltrax captures Elsa and destroys the Dino Lab before unveiling his powerful Zelzord. Tommy ventures into the Zelzord to confront Zeltrax, ultimately defeating him, but the destruction of the maverick Zelzord itself comes at a high price As the Rangers recover from this ferocious conflict, they find that Mesegog remains at large, having absorbed some of the Dinogems energy, and is now capable of duplicating his own DNA. The Rangers use the remainder of their power to confront him in a final battle to emerge as the dominant species