So this is my Sunny Screens team, I have battled around 14 times with it and only lost once.
Pokemon: Dugtrio
Item: Air Balloon
Ability: Arena Trap
Earthquake
Sucker Punch
Hone Claws
Stealth Rock
Nature: Jolly +Speed -SpA
EVs: 4 HP
252 Atk
252 Speed
Pokemon: Ninetails
Item: Leftovers
Ability: Drought
Fire Blast
Nasty Plot
Solar Beam
Hidden Power Electric
Nature: Timid +Speed -Atk
EVs: 4 HP
252 SpA
252 Speed
Pokemon: Victini
Item: Choice Band
Ability: Victory Star
V-Create
Physic
Bolt Strike
Brick Break
Nature: Hasty +Speed -Def
EVs: 31 HP
224 Atk
32 SpA
252 Speed
Pokemon:Espeon
Item: Leftovers
Ability: Magic Bounce
Physic
Light Screen
Reflect
Heal Bell
Nature: Timid +Speed -Atk
EVs: 252 HP
4 SpA
252 Speed
Pokemon: Salamance
Item: Life Orb
Ability: Moxie
Fire Blast
Dragon Dance
Outrage
Earthquake
Nature: Lonely +Atk -Def
EVs: 252 Atk
4 SpA
252 Speed
Pokemon: Gengar
Item: Leftovers
Ability: Levitate
Shadow Ball
Sludge Bomb
Thunderbolt
Destiny Bond
Nature: Timid +Speed -Atk
EVs: 4 HP
252 SpA
252 Speed
So the point of this team is to get Ninetails in for Drought. After Drought is active your Victini can now be a monster sweeper using V-Create. Espeon can usually take a few hits giving it time to put in screens when needed, and can also do some good damage with Physic (STAB). Dugtrio provide coverage of electric and ground pokemon, since he is very fast. Gengar can be switched in to avoid the dreaded Close Combat, and when needed, can take out an enemy late game sweeper with destiny bond. Salamance is a very good late game sweeper with the life orb on.
Pokemon: Dugtrio
Item: Air Balloon
Ability: Arena Trap
Earthquake
Sucker Punch
Hone Claws
Stealth Rock
Nature: Jolly +Speed -SpA
EVs: 4 HP
252 Atk
252 Speed
Pokemon: Ninetails
Item: Leftovers
Ability: Drought
Fire Blast
Nasty Plot
Solar Beam
Hidden Power Electric
Nature: Timid +Speed -Atk
EVs: 4 HP
252 SpA
252 Speed
Pokemon: Victini
Item: Choice Band
Ability: Victory Star
V-Create
Physic
Bolt Strike
Brick Break
Nature: Hasty +Speed -Def
EVs: 31 HP
224 Atk
32 SpA
252 Speed
Pokemon:Espeon
Item: Leftovers
Ability: Magic Bounce
Physic
Light Screen
Reflect
Heal Bell
Nature: Timid +Speed -Atk
EVs: 252 HP
4 SpA
252 Speed
Pokemon: Salamance
Item: Life Orb
Ability: Moxie
Fire Blast
Dragon Dance
Outrage
Earthquake
Nature: Lonely +Atk -Def
EVs: 252 Atk
4 SpA
252 Speed
Pokemon: Gengar
Item: Leftovers
Ability: Levitate
Shadow Ball
Sludge Bomb
Thunderbolt
Destiny Bond
Nature: Timid +Speed -Atk
EVs: 4 HP
252 SpA
252 Speed
So the point of this team is to get Ninetails in for Drought. After Drought is active your Victini can now be a monster sweeper using V-Create. Espeon can usually take a few hits giving it time to put in screens when needed, and can also do some good damage with Physic (STAB). Dugtrio provide coverage of electric and ground pokemon, since he is very fast. Gengar can be switched in to avoid the dreaded Close Combat, and when needed, can take out an enemy late game sweeper with destiny bond. Salamance is a very good late game sweeper with the life orb on.