Is This a Good Idea For Doubles?

Question

So its doubles with Cresselia and Salazzle

Cresselia uses skill swap on Salazzle gaining Corrosion and Salazzle gets Levitate, cutting its 4x weakness to ground.

Comments

Depends on the rest of your team and the format.

Answer 1

hm... it's a good strategy, but what if Cresselia gets K.O.'d before you get a chance to trade abilities?
But I do agree with sumwun, it depends on the rest of your team.
For doubles, this is my team:
Toxapex(Ability: Merciless/ Moveset: Recover, Baneful Baunker, Poison Jab, Scald/ Item: Poison Barb)
Salazzle(Ability: Corrosion/ Moveset: Flamethrower, Attract, Toxic, Sludge Bomb/ Item: Charcoal)
Passimian(Ability: Receiver/ Moveset: Low Sweep, Brick Break,Brutal Swing, Substitute/ Item: Black Belt)
Oranguru(Ability: Telepathy/ Moveset: Shadow Ball, Trick Room, Psychic, Substitute/ Item: Lax Incense)
Primarina(Ability: Torrent/ Moveset: Hydro Pump, Sparkling Aria, Sing, Dazzling Gleam/ Item: Primarinum Z)
Toucannon(Ability: Skill Link/ Moveset: Drill Peck, Bullet Seed, Fly, Protect/ Item: Sharp Beak)

Toxapex+Salazzle (Salazzle poisons other Pokemon, then Toxapex gets a lot of crits due to Merciless)
Passimian+Oranguru (Oranguru uses Trick Room to increase Passimian's SPEED, Passimian can use Brutal Swing and wont harm Oranguru)
Primarina+Toucannon (Primarina uses Sing and lets Toucannon get a few hits in. Z-Move for extra power)
(Toxapex+Oranguru+Trick Room) (with the others, there really isn't a strategy, just get in a few more swings)
So yeah, it really depends on the rest of your team.

Answer 2

Sure, that could work, but it might be a good idea to use something faster than Cresselia for Skill Swap; otherwise the enemy Pokemon could screw up what you're going for before you have a chance to actually set it up and do anything about it.
Your best bet would probably be to breed a male Spritzee or Aromatisse that knows Skill Swap, with a female Cutiefly or Ribombee, and get a Cutiefly egg that knows Skill Swap, then hatch and evolve it to Ribombee (it's the fastest Pokemon besides Mega Alakazam that can know it)