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My bad I submitted something similar to this before but it was moves nit abalities and I got mixed up and thought I put abilities which u took, ill take down the post
i mean, they're pretty similar. Signature Mayhem also wasnt particularly fleshed out, you gave no details on how slates or submissions would work. Signature Style was pretty clear that we would mostly be attempting to give lackluster mons more resources to do their jobs more effectively.
I also have an issue with the fact that Signature Sign would go from OU down, because it would start by giving more resources to the mons that are already good.