go to the move maniac in pastroia city with a heartscale
Chat with our AI personalities
Have Piloswine learn AncientPower and level it up. (Piloswine cannot learn AncientPower through level up. Go to the Move Maniac in Blackthorn City and have a Heart Scale. Talk to him and teach your Piloswine AncientPower.)
teach piloswine ancientpower and level it up
teach Piloswine AncientPower and level it up
Just teach it AncientPower, then level up
You have to teach it AncientPower through Move Tutor.