Wish I could help you Eric, but the D/P games are harder to find than a Muchlax is in the game!

Tell you what, any time you have questions about a D/P attack or other mechanic, just PM me.

As for what the Plates do, in the game, they are special hold items that only benefic Arceus (when he finally becomes accessable, which will happen in an event). He is a Normal Pokemon, but when he holds a Plate, his Type changes to the corresponding Type.

That's in the game. In this fic, they might have other powers...

No, you cannot get twins in the real game.

But anyway, stay tuned.