I'm looking to get all 18 forms of Arceus, and I am in need of assistance. I already have 3, so I need 15 more. If you want a mythical pokemon, I can offer Victini, Mew, and Darkrai. If you want a shiny, I can offer Dialga, Palkia, Giratina, Articuno, Zapdos, Moltres, and Yveltal. Or, you can request any normal or non-shiny legendary pokemon that you would like me to get for you.
...Do they all have to be unique? Because really, I could give you 15 clones of the same Arceus (with the Plates you need) and you'd have all 15 forms right away. 😄
If that's not ideal, they can at least serve as placeholder Pokemon till you get your hands on more.
I don't know much about cloning, so sorry if this seems like a dumb question, but would all of these Arceus have an event OT and ID?
Yep! They're all exactly the same as the base Arceus (which I obtained myself heaps of years ago). You can't tell a Pokemon is cloned unless you have another copy of it to compare it to and you see that they're exactly the same.
I'm interested in Victini in all honesty, as I don't have one anymore after releasing my last one (seemed suspiciously hacked after looking closer at it). I can clone it and return the original very quickly inbetween the trade. That said, you'll just need 15 fodder Pokemon to use for trades.