Each Mega Stone has a "-ite" or "-nite" on the end of it preceded by the related Pokemon's name (example: Lucario's Mega Stone is called Lucario-"nite", Blaziken's Mega Stone is Blaziken-"ite"). Certain Pokémon will be able to evolve into a Mega form with the use of a Mega Stone, a held object. However, this evolution will devolve into to their pre-evolved form at the end of the battle it's involved in.