it must learn the move achient power im not sure what level but i think it is in the 30s or 40s
he has to learn ancient power to evolve
Level it up once it knows the Ancient Power move and it will evolve.
You need to teach Piloswine Ancient Power.
You must evolve a Piloswine to have a Mamoswine.
A Mamoswine evolves from a Piloswine which evolves from a Swinub.
Mamoswine doesn't evolve either way because it doesn't exist in Pokemon LeafGreen. It evolves from Piloswine who evolves from Swinub, but Piloswine can't evolve into Mamoswine in LeafGreen.
You can't catch a Mamoswine but to get one you need to get a Swinub train it to about level 33 and it will evolve into a Piloswine and get a Heart Scale and teach it Ancient Power and then level it up one level and it should evolve into Mamoswine.
To evolve Pilowswine into Mamoswine your Pilowswine will need to learn the move Ancientpower. Then, it will evolve.
teach piloswine ancientpower and level it up
To get mamoswine you need to obtain swinub and evolve it into piloswine.Then lvl up your piloswine till it knows ancient power.lvl it up a level and bam itll evolve into mamoswine.
First evolve it into Piloswine then level Piloswine up with Ancientpower as one of its moves
Piloswine does, it evolves into Mamoswine.