Because it's raining outside and I'm bored out of my mind.
Neolant
@ Damp Rock
Ab: Swift Swim/ Storm Drain
EV: 252 Def, 252 Sp. Def, 4 Sp. Atk
Role: lead
~ U-Turn
~ Rain Dance
~ Aqua Ring
~ Surf
Shibirudon
@ Leftovers
Ab: Levitate
EV: 252 Attack, 252 Sp. Attack, 4 Defence
Role: Sweeper
~ Volt Switch
~ Coil
~ Crunch
~ Thunder
Emonga
@ Light Clay
Ab: Motor Drive
EV: 252 Speed, 252 HP, 4 HP
Role: Defence support
~ Volt Switch
~ Roost
~ Light Screen
~ Charm
Chillaccino
@ Metronome
Ab: Skill Link
EV: 252 Def, 252 Sp. Def, 4 Speed
Role: Skill link sweeper
~ U-Turn
~ Rock Blast
~ Bullet Seed
~ Tail Slap
Illumise
@ Lum Berry
Ab: Prankster
EV: 252 Def, 252 Sp. Def, 4 HP
Role: Toxic staller
~ U-Turn
~ Wish
~ Toxic
~ Encore
Togetic
@ Eviolite
Ab: Serene Grace
EV: 252 Sp. Atk, 252 HP, 4 Def
Role: Heal Support
~ Baton Pass
~ Wish
~ Heal Bell
~ Flamethrower (type coverage)
I would have made Togetic a Toxic staller, but if I subbed Flamethrower for Toxic, it'd be vulnerable to Taunt.
As for entry hazards... I don't think there's a NU (or indeed any) Pokemon that can learn both Rapid Spin and U-Turn/ Volt Switch/ Baton Pass.
