It can change its type based on the item it holds, and have a special attack that change its type based on the held item. No it is not Arceus, but the recently introduced Pokemon Silvady. This is pretty exciting news. Most times, when we see a new Pokemon that have a "new ability" that its effect is the same as an older ability (I am looking at you Lunala and Solgaleo) we get a little annoyed. However, this time even if Silvady works just like Arceus, it is very unique, because Arceus is a legendary Pokemon that can't be used in most metagames, while Silvady probably can (it's not legendary because it has a pre-evolution, at least I hope so). It is interesting to see what implications this Pseudo-Arceus has on the competitive scene. Also, it is a welcome trend, in my opinion, to make more Pokemon that are not legendary, but are based on an existing one with a unique ability. A Pseudo-Darkrai with Bad Dreams, a Pseudo-Groudon with Desolate land, etc (there are not too many options, actually).
So, in order to make Silvady work just like Arceus, but not being too powerful, I wonder what the stats should be like. As we know, other big traits that Arceus has in battles are its stats, which are 120 all across the board. Obviously, Silvady will be too powerful with such stats, but in order to be as close as possible to work like Arceus, it can just lower the number in each stat from 120 to 100 or 90, or maybe 80? What number would make it ok to not be considered overpowered, yet not weak? Well, it also depends on its movepool. In particularly, its signature move.
Arceus has the signature move, Judgment. A special move with 100 base power (and accuracy) that can be any type (depends on the item). Silvady has a similar move called Multi-Attack, and, like Arceus's Judgement, it also change its type depends on the held item. However, this Multi-Attack move might be different. Just going by the name, one could assume that this move will be a physical move. After all, so far, Tri Attack is the only special move out of all the moves that contain the word Attack in their name. Also, who says Multi Attack is an actual attacking move? Sand Attack is a status move even though it has Attack in its name. However, based on the fact the move changes type, it is more likely to be a damaging move. If so, it can either be 100 base power, like Arceus, or even more powerful than that.
Another thing that can help predicting its stats, would be the fact that there is no Pokemon with 100 base power in each stat that can be used in official competitive battles. Victini,Mew, Celebi, Jirachi, all of them are always banned from VGC. However, they are all event Pokemon, and that is the reason (iirc) that they are not allowed in battles, and not necessarily because of their stats. Still, I think that considering Multi Attack being a damaging move with 100 or more base power, it would be a very powerful Pokemon if given 100 base power in all stats.
So my prediction, assuming Silvady was made to be an available Arceus in battles, is that it will have Multi-Attack with a little more than 100 base power, and 90 (or maybe even 95) in every stat. It makes Silvady relatively slow, but also bulky with the power to dish out a powerful attack that can be any type. Also, a possible advantage over Arceus would be the ability to not have a change in appearance based on the chosen type. Not knowing what is the type of Silvady from the beginning can compensate the relatively low stats and add more twist to the battle.
From there, the only question that is left for me is whether we'll see it caring Extreme Speed or not
So, in order to make Silvady work just like Arceus, but not being too powerful, I wonder what the stats should be like. As we know, other big traits that Arceus has in battles are its stats, which are 120 all across the board. Obviously, Silvady will be too powerful with such stats, but in order to be as close as possible to work like Arceus, it can just lower the number in each stat from 120 to 100 or 90, or maybe 80? What number would make it ok to not be considered overpowered, yet not weak? Well, it also depends on its movepool. In particularly, its signature move.
Arceus has the signature move, Judgment. A special move with 100 base power (and accuracy) that can be any type (depends on the item). Silvady has a similar move called Multi-Attack, and, like Arceus's Judgement, it also change its type depends on the held item. However, this Multi-Attack move might be different. Just going by the name, one could assume that this move will be a physical move. After all, so far, Tri Attack is the only special move out of all the moves that contain the word Attack in their name. Also, who says Multi Attack is an actual attacking move? Sand Attack is a status move even though it has Attack in its name. However, based on the fact the move changes type, it is more likely to be a damaging move. If so, it can either be 100 base power, like Arceus, or even more powerful than that.
Another thing that can help predicting its stats, would be the fact that there is no Pokemon with 100 base power in each stat that can be used in official competitive battles. Victini,Mew, Celebi, Jirachi, all of them are always banned from VGC. However, they are all event Pokemon, and that is the reason (iirc) that they are not allowed in battles, and not necessarily because of their stats. Still, I think that considering Multi Attack being a damaging move with 100 or more base power, it would be a very powerful Pokemon if given 100 base power in all stats.
So my prediction, assuming Silvady was made to be an available Arceus in battles, is that it will have Multi-Attack with a little more than 100 base power, and 90 (or maybe even 95) in every stat. It makes Silvady relatively slow, but also bulky with the power to dish out a powerful attack that can be any type. Also, a possible advantage over Arceus would be the ability to not have a change in appearance based on the chosen type. Not knowing what is the type of Silvady from the beginning can compensate the relatively low stats and add more twist to the battle.
From there, the only question that is left for me is whether we'll see it caring Extreme Speed or not