Full Gen V Competitive

Accelgor (M) @ Focus Sash
Trait: Sticky Hold
EVs: 4 HP / 252 SAtk / 252 Spd
Hasty Nature (+Spd, -Def)
- Spikes
- U-turn
- Bug Buzz
- Focus Blast


Jellicent (M) @ Leftovers
Trait: Cursed Body
EVs: 248 HP / 216 Def / 44 Spd
Bold Nature (+Def, -Atk)
- Scald
- Will-O-Wisp
- Recover
- Taunt


Conkeldurr (M) @ Flame Orb
Trait: Guts
EVs: 120 HP / 252 Atk / 136 SDef
Brave Nature (+Atk, -Spd)
- Bulk Up
- Drain Punch
- Mach Punch
- Payback


Excadrill (M) @ Air Balloon
Trait: Sand Rush
EVs: 4 HP / 252 Atk / 252 Spd
Jolly Nature (+Spd, -SAtk)
- Swords Dance
- Earthquake
- Rock Slide
- Rapid Spin


Thundurus (M) @ Life Orb
Trait: Prankster
EVs: 4 Def / 252 SAtk / 252 Spd
Timid Nature (+Spd, -Atk)
- Nasty Plot
- Thunderbolt
- Hidden Power [Ice]
- Taunt


Victini @ Choice Specs
Trait: Victory Star
EVs: 4 HP / 252 SAtk / 252 Spd
Timid Nature (+Spd, -Atk)
- Fire Blast
- Thunderbolt
- Focus Blast
- Psychic

I would go for Toxic>WoW on Jellicent because you already run Scald, or you could keep WoW and go for Surf over Scald