Ability: Huge Power
Aqua Ring (Heals Azumarill each turn, Assists @Leftovers to recover HP)
Double-Edge (Doubles in power due to ability, Heals from recoil every turn due to @Leftovers and Aqua Ring, Good offensive move, Good accuracy)
Dig (Helps evade attacks, Doubles in power due to ability, Coverage against Fire-Types, Rock-Types, Electric-Types, and Poison-Types) [And I think Ice-Types, but I could be wrong]
Muddy Water or Ice Punch (Muddy Water - STAB, Doubles in power due to ability, Decent accuracy, Lowers target's accuracy, Coverage against Fire-Types, Ground-Types, and Rock-Types) or (Ice Punch - Good accuracy, May freeze the target, Doubles in power due to ability, Coverage against Grass-Types, Flying-Types, Dragon-Types, and Ground-Types)
**Try to avoid the move Skill Swap because it'll reverse the effect of the ability Huge Power.