From Bulbapedia, the community-driven Pokémon encyclopedia.
I must know it all!
Earth Plate: The power of defeated giants infuses this Plate.
Zap Plate: Two beings of time and space set free from the Original One.
Toxic Plate: Three beings were born to bind time and space.
Insect Plate: Two make matter, and three make spirit, shaping the world.
Flame Plate: The Original One breathed alone before the universe came.
Medow Plate: The powers of Plates are shared among Pokémon.
Stone Plate: The rightful bearer of a Plate draws from the Plate it holds.