I can do multiple examples of this but here are a few issues.
Doesn't seem to respect the IV values (sets them all to 31)
When having its regular ability, (Limber) it makes its game origin HG and messes with the IVs even more. (Auto mod should make its encounter in Ultra Sun or something.)
Ditto @ Choice Scarf Ability: Imposter EVs: 252 HP / 4 Atk / 252 Def IVs: 30 HP / 30 Atk / 30 Def / 30 SpD / 0 Spe Relaxed Nature
I can do multiple examples of this but here are a few issues.