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I haven't tried out this team yet but to me it seems pretty good:
Azelf @ Damp Rock
Trait: Levitate
EVs: 252 HP / 4 Atk / 252 Spd
Jolly Nature
- Rain Dance
- Stealth Rock
- Taunt
- Explosion
Kingdra @ Life Orb
Trait: Swift Swim
EVs: 252 Atk / 240 SAtk / 16 Spd
Naughty Nature
- Waterfall
-...