Dragon?
Lapras @ Focus Sash/Life Orb/Lum Berry
Trait: Water Absorb/Shell Armor
EVs: 252 Attack | 252 Speed | 4 HP
Jolly/Adamant Nature
- Dragon Dance
- Aqua Tail/Waterfall
- Outrage
- Ice Shard/Zen Headbutt
A sweeping Lapras. I don't know how it learns Dragon Dance and Outrage, but it has them. Set up with DD, then sweep, pretty straightforward. Aqua Tail for more power (90 Power, 90 Accuracy), or Waterfall for accuracy (80 Power, 100 Accuracy). Outrage is powerful. For the last slot, Ice Shard has priority STAB, just in case. Zen Headbutt for coverage. For the item, Focus Sash to have a safe setup outside of sandstorm/stealth rock, Life Orb if you are against something that won't 1hit-KO Lapras, or Lum Berry for Outrage. Ability, Water Absorb gives you a free setup if you switch Lapras into something that has water and no other effective moves. Shell Armor with Life Orb if you are afraid of being haxed.