This is my team for a double battle:
Blissey
Thunderbolt
Solarbeam
Softboiled
Skill Swap
Slaking
Endure
Reversal
Foucus Punch
Sunny Day
Shedinga
Shadow Ball
Grudge
Toxic
Confuse Ray
Sableye
Shadow Ball
Pursuit
Foucus Punch
Recover
So the basic stratagy is to use Skill Swap to take turant and giv it to the enemy. Then use Blissey as a sunnybeamer. After Slaking faints, take Shedinga's ability and give it to Sableye.
Blissey
Thunderbolt
Solarbeam
Softboiled
Skill Swap
Slaking
Endure
Reversal
Foucus Punch
Sunny Day
Shedinga
Shadow Ball
Grudge
Toxic
Confuse Ray
Sableye
Shadow Ball
Pursuit
Foucus Punch
Recover
So the basic stratagy is to use Skill Swap to take turant and giv it to the enemy. Then use Blissey as a sunnybeamer. After Slaking faints, take Shedinga's ability and give it to Sableye.