you have to trade a swinub.
To evolve Pilowswine into Mamoswine your Pilowswine will need to learn the move Ancientpower. Then, it will evolve.
you dont actually find one you have to find a swinub or pilowswine and evolve it
Catch a swinub when they swarm on route 217 and evolve it
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To get a Mammoswine in Pokemon Diamond/Pearl, you must teach your Pilowswine Ancient Power. Pilowswine can't learn Ancient Power, so you have to mate it with a male Pokemon that has the move Ancient Power. Wait awile then receive the egg from the old man and the baby Swinub has the move Ancient Power like the father.
There will be one day of an out-break of Swinub on the second route away from Snowpoint City, catch one and evolve it.
level it up while it knows ancient power
You need a swinub, they swarm in route 216 often.
No, Piloswine does not learn Sheer Cold.
it evolves if you trade it with asoft sand
Ash is not in platinum..
ancient power is learned in the 30's lv