So this is my water type team. I'd be starting off with rain dancing pokemon, and into walls, like swampert, sweepers like garchomp, and support/taunt/stallers like my bibarel.
Ludicolo @ Leftovers
Swiftswim
Modest- 252 SpDef/252 SpAtk/4 Def
Rain Dance
Icebeam
Surf
Energy Ball
My Lead. Starts off Rain Dancing, since it can survive pretty much every lead's attack the first turn. Since his weaknesses are not as common as most pokemon. Covers pretty much everything. Surf does a lot of neutral damage to everything it's not super effective against and ice beam covers flying, while energy ball covers all the water-types that may try to wall.
Kingdra @ Leftovers
SwiftSwim
Modest- 252 SpAtk/252 Spe/4 Def
Rain Dance
Ice Beam
Surf
Dragon Pulse
Second Rain Dancer. Becomes immensely powerful after a Rain Dance. Covers pretty much everything. From grass types- like sceptile thinking they could be faster. To other kingdras with Dragon Pulse. Surf gets practically everything inbetween.
Swampert @ Leftovers
Torrent
Bold- 252 Def/252 SpDef/4 SpAtk
Stealth Rock
Ice Beam
Surf
Earthquake
My wall. Stops incoming electric attacks on my other pokemon. With only one weakness, he's pretty much a shoo-in. Because he'll be coming in on Blissey's when I know they'll twave/bolt. They'll most likely switch allowing me to stealth rock.
Bibarel @ Leftovers
Unaware
Bold- 252 Def/252 Hp/6 SpDef
Taunt
Super Fang
Yawn
Waterfall
Staller/Blissey Counter. He can just taunt blissey and she's done. Then Superfang away. Same for Cress/scarm/noir/Tomb/Lax/suicune all those walls who want to STalk or Twave or set up residual damage. And Once I know a switch is coming, I can use yawn to force another switch and so on. While the Stealth rock slowly brings them down. Bibarel takes about 45% from a JollyChomp's EQ. so it's pretty much essential and often Underrated.
Gyarados @ Salac Berry
Intimidate
Adamant- 252 Atk/252 Spe/4 Def
Dragon Dance
Ice Fang
Waterfall
Earthquake
My first Physical Sweeper thats designated to Sweep. Just your standard Gyarados. But, Once he becomes lower on HP, even after a Dragon Dance or two. Salac Berry activates and raises his speed even higher allowing for easier KOs just in case.
Garchomp @ LifeOrb
Sand Veil
Naive- 252 SpAtk/252 Atk/ 4 Spe
Surf
Earthquake
Dragon Claw
Fire Blast
My MixChomp. Physical and Special Sweeper numba 2! Covers all manner of types- even though the pretty innaccurate Fire Blast may miss occasionally. Surf can be boosted by the Rain Dancing for extra power. Can Switch in on electric attacks as well as swampert.
Ludicolo @ Leftovers
Swiftswim
Modest- 252 SpDef/252 SpAtk/4 Def
Rain Dance
Icebeam
Surf
Energy Ball
My Lead. Starts off Rain Dancing, since it can survive pretty much every lead's attack the first turn. Since his weaknesses are not as common as most pokemon. Covers pretty much everything. Surf does a lot of neutral damage to everything it's not super effective against and ice beam covers flying, while energy ball covers all the water-types that may try to wall.
Kingdra @ Leftovers
SwiftSwim
Modest- 252 SpAtk/252 Spe/4 Def
Rain Dance
Ice Beam
Surf
Dragon Pulse
Second Rain Dancer. Becomes immensely powerful after a Rain Dance. Covers pretty much everything. From grass types- like sceptile thinking they could be faster. To other kingdras with Dragon Pulse. Surf gets practically everything inbetween.
Swampert @ Leftovers
Torrent
Bold- 252 Def/252 SpDef/4 SpAtk
Stealth Rock
Ice Beam
Surf
Earthquake
My wall. Stops incoming electric attacks on my other pokemon. With only one weakness, he's pretty much a shoo-in. Because he'll be coming in on Blissey's when I know they'll twave/bolt. They'll most likely switch allowing me to stealth rock.
Bibarel @ Leftovers
Unaware
Bold- 252 Def/252 Hp/6 SpDef
Taunt
Super Fang
Yawn
Waterfall
Staller/Blissey Counter. He can just taunt blissey and she's done. Then Superfang away. Same for Cress/scarm/noir/Tomb/Lax/suicune all those walls who want to STalk or Twave or set up residual damage. And Once I know a switch is coming, I can use yawn to force another switch and so on. While the Stealth rock slowly brings them down. Bibarel takes about 45% from a JollyChomp's EQ. so it's pretty much essential and often Underrated.
Gyarados @ Salac Berry
Intimidate
Adamant- 252 Atk/252 Spe/4 Def
Dragon Dance
Ice Fang
Waterfall
Earthquake
My first Physical Sweeper thats designated to Sweep. Just your standard Gyarados. But, Once he becomes lower on HP, even after a Dragon Dance or two. Salac Berry activates and raises his speed even higher allowing for easier KOs just in case.
Garchomp @ LifeOrb
Sand Veil
Naive- 252 SpAtk/252 Atk/ 4 Spe
Surf
Earthquake
Dragon Claw
Fire Blast
My MixChomp. Physical and Special Sweeper numba 2! Covers all manner of types- even though the pretty innaccurate Fire Blast may miss occasionally. Surf can be boosted by the Rain Dancing for extra power. Can Switch in on electric attacks as well as swampert.