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Quoted By: >>19520861 >>19523312 >>19523701 >>19524438
>A new feature introduced in Pokémon Omega Ruby & Alpha Sapphire is Prehistoric/Primal/Primeval Pokémon. These Pokémon seem to work in a similar manner to Mega Evolution through a process called Ancient Devolution, and sends the Pokémon back to their prehistoric state. Full details on this feature are not known
