Alright, I've been testing this team out, and it's worked pretty well so far, but I want to hear your suggestions.
Here's the team:
Mamoswine @ Leftovers
Ability: Thick Fat
EVs: 4 HP, 252 Atk, 252 Spe
Nature: Jolly
Stealth Rock
Icicle Crash
Ice Shard
Earthquake
This Mamoswine can take out...