>>21404878It would get a Mega for each different form.
Regular gets all of its stats boosted except Attack, which goes down a ton to compensate.
Rotom-H gets a boost in Special Attack and Special Defense.
Rotom-W gets a boost in Defense and Special Defense.
Rotom-C gets a drastic boost in Attack and Special Attack, but at the cost of Speed.
Rotom-F gets a boost in Defense and Special Attack.
Rotom-S gets a boost in Special Attack and Speed.
Overall, they all become shit.