Koaloak to Magmotive

Koaloak: The one plant they eat provides the nutrients to enhance their psychic powers. This lead to a dependency, and grouchy behavior.

Burdock: A rare grass Pokémon that's remarkably strong for its light body. It can hurl "Burdock Bombs" that first drain the energy of its opponent, then explodes.

Glacenite: Based on the fact that ice can split rocks over time. They are solitary dwellers of mountains with ice cannons for arms. The explosive sound from their cannons often causes avalanches.

Magmotive: Evolves from Steamroller. Within their bodies burn rocks that supply them the energy to travel quickly across the land. They are quite fiery at first, but once tamed, they provide fast transportation.