Okay. I will ask all of the involved staff members for input help in lack of better options.
@DontTalkDT @DarkDragonMedeus @GyroNutz @Elizhaa @Maverick_Zero_X @Executor_N0 @FinePoint @The_real_cal_howard
Does the above post make logical sense to you? I would greatly appreciate if as many of you as possible help us to finally reach a conclusion here.
Arceus has been historically inconsistent in the anime (looking at you, meteor scene), but honestly it's all easily explainable by the fact that appearances of Arceus are avatars it creates that can be as powerful or as weak as it wants. We receive confirmation of them being only a small piece of him in Legends, and as mentioned, Arceus has been established to like testing people and basically serving the plot.
I will agree that the plates are pretty vague, but the most consistent explanation seems to be that they're indeed the source of all moves, and that Arceus logically contains all of their powers as well, at least in his true form.
Unfortunately we don't have confirmation of this, but I'd wager that in the same way Arceus is split across the multiverse as avatars, pieces of him, the individual plates in each universe are pieces of the larger concept of the plates as well, though this is ultimately speculation.
I still believe that Arceus as the heart, his true form so-to-speak, should logically have
every power of the (multi)verse
he created, including those naturally demonstrated by humans, and those developed based on his powers.
In addition, the Lake Trio, and Arceus's true form by extension, invented knowledge itself, so logically he should be capable of the knowledge needed for powers developed later.
His avatars, though, are where everything sort of becomes complicated and varies wildly, and is often based off the plates he has.
I'd be fine with his avatars only having base Pokemon moves, since that I can believe, though I can't believe that his true form, which is the source of everything, even abstract concepts like knowledge, would be limited in-verse.
