Silver_Lucario42
1) Coming back from my post in the second page: "just to avoid drama later, you may only use Silvally-N as PS! treats Silvally like Arceus - aka every one of its formes are diff Pokémon rather than just one." That means that "Silvally" will be the Normal-type one, just as, anyone joining with "Rotom" or "Oricorio" must use their normal version unless they join with Rotom-W, -H or whatever.
2) You must post three, your opponent will choose which Pokemon he wants you to use through PM and I will tell you when you've sent me which of your opponent's Pokemon you wish to battle (also through PM).