This troper was playing through
Pokémon SoulSilver for the third time, and decided to pick up a Swinub in Ice Path and evolve it into a Mamoswine before fighting Clair for the 8th badge. Normally Clair gives him a lot of trouble, but Mamoswine was able to destroy 3 of Clair's 4 Pokémon while taking very little damage, and it was probably the easiest fight he'd ever had against her.