I need 2-4 Surf Water Absorb Pokémon for the Battle Maison which I plan on doing Doubles/Multis, and one of them will be Lapras.
Lapras @ Damp Rock
Water Absorb
Modest/Timid
4 HP/252 SpAtk/252 Spe
-Surf
-Rain Dance
-Ice Beam
-Thunder
Not sure if I should do Modest or Timid, but right now I haven't even got a Modest one nor something that will allow me to breed a Modest Nature onto Lapras so I think I'll do Timid.
I need at least one more Water Absorb Pokémon with Surf. Perhaps Lanturn?
EDIT: Dry Skin does exactly the same thing, so that's fine as well.
EDIT 2: Dry Skin does not do exactly the same thing, but it has very similar effects so it's fine.
Go Modest because Lapras isn't that fast. Protect is a staple in doubles formats to punish double-targeting, letting a partner eliminate a potential threat, etc, so drop a move on Lapras for it. And Lapras may struggle in doubles formats, given the commonness of Rock Slide, a spread move.
Also, Politoed is pretty much mandatory on rain teams simply because it sets rain off the bat with Drizzle:
-Scald
-Icy Wind/Encore/Perish Song
-Helping Hand/Encore/Perish Song
-Protect
Nature: Bold
EVs: 252 HP/252 Def/4 SDef
Item: Leftovers/Sitrus Berry/Damp Rock
Ability: Drizzle
or
-Scald
-Ice Beam
-Protect
-Rain Dance/Encore/Perish Song
Nature: Calm
EVs: 252 HP/236 Def/20 SDef
Item: Damp Rock/Sitrus Berry
Ability: Drizzle
or
-Hydro Pump/Scald
-Ice Beam
-Focus Blast
-Psychic/Encore/Rain Dance
Nature: Timid
EVs: 4 HP/252 SAtk/252 Spe
Item: Choice Scarf
Ability: Drizzle
or
-Hydro Pump/Surf/Scald
-Ice Beam/Psychic/Focus Blast
-Ice Beam/Psychic/Focus Blast
-Protect
Nature: Modest
EVs: 172 HP/252 Atk/84 Spe
Item: Damp Rock/Sitrus Berry
Ability: Drizzle
Volt Absorb is the preferred ability for Lanturn, as it already resists Water. The only other viable Water Absorb user in doubles is Jellicent. Dry Skin has Water Absorb's exact same effect of restoring 1/4th of HP when the user is hit by a Water move, plus it restores 1/8ths HP every turn under rain.
However, alternative Dry Skin Pokemon to use are Heliolisk and Toxicroak. Their frailty holds you back, though:
Heliolisk:
-Thunder
-Focus Blast/Surf
-Hidden Power (Ice)
-Protect
Nature: Timid
EVs: 4 Def/252 SAtk/252 Spe
Item: Life Orb
Ability: Dry Skin
Toxicroak:
-Drain Punch/Cross Chop
-Sucker Punch
-Fake Out
-Protect
Nature: Jolly/Adamant
EVs: 4 HP/252 Atk/252 Spe
Item: Life Orb/Black Sludge
Ability: Dry Skin
It's best to use Swift Swimmers in rain teams, to make up for the lack of Speed you currently have. Ludicolo and Kingdra 4x resist Surf, so they have no problems being hit by it:
Ludicolo:
-Hydro Pump
-Giga Drain
-Ice Beam
-Fake Out/Rain Dance/Protect
Nature: Modest
EVs: 4 HP/252 SAtk/252 Spe
Item: Life Orb/Sitrus Berry/Lum Berry
Ability: Swift Swim
Kingdra:
-Hydro Pump
-Draco Meteor/Dragon Pulse
-Surf/Waterfall
-Protect/Rain Dance
Nature: Modest/Rash/Mild
EVs: 4 HP/252 SAtk/252 Spe
Item: Haban Berry/Roseli Berry
Ability: Swift Swim