This is my NU team. I've beaten a decent amount of people on Showdown with it, so feel free to consider it. Make any changes you want.
This is my team to challenge Genga.
Icy Birdie (Articuno) @ Leftovers

Trait: Pressure
EVs: 128 Special Attack / 252 Special Defense / 128 Speed
Timid Nature (+Spe, -Atk)
- Protect
- Roost
- Ice Beam
- Roar
This guy stalls. When someone is poisoned, (or burned, etc) Articuno comes in. Protect and Roost go pretty well together. Ice Beam is for STAB, and Roar is to get rid of people. Also damages them when Stealth Rock is on.
Wall for a Head (Bastiodon) @ Leftovers

Trait: Sturdy
EVs: 4 Attack / 252 Defense / 252 Special Defense
Careful Nature (+SpD, -SpA)
- Earthquake
- Iron Head
- Stealth Rock
- Toxic
This guy takes hits. And fights back. Earthquake is for that awesome power. Iron Head is also for that awesome power. Stealth Rock is the hazard. Toxic is for annoying people.
Fly High! (Braviary) @ Choice Band

Trait: keen Eye
EVs: 4 HP / 252 Attack / 252 Speed
Jolly Nature (+Spe, -SpA)
- Brave Bird
- Crush Claw
- Shadow Claw
- U-Turn
Because this is choiced, it's all-out-attack. Brave Bird is for STAB, even with a little recoil. Crush Claw has saved me so many times. Shadow Claw for some damage and U-Turn to switch out.
Blue Frog (Seismitoad) @ life Orb

Trait: Swift Swim
EVs: 252 HP / 4 Defense / 252 Special Attack
Modest Nature (+SpA, -Atk)
- Rain Dance
- Earth Power
- Hidden Power [Ice]
- Hydro Pump
This guy looks like a glow-in-the-dark kind of thing. It's covered in greenish warts. Rain Dance activates Swift Swim. It also boosts Hydro Pump. Earth Power is for STAB. Hidden Power Ice is for coverage, and Hydro Pump is for STAB and it gets a boost from rain.
Fishy (Alomomola) @ Leftovers

Trait: Healer
EVs: 252 HP / 4 Attack / 252 Defense
Impish Nature (+Def, -SpA)
- Wish
- Protect
- Waterfall
- Toxic
Stall, stall, stall, I just love to stall. Alomomola is my staller. WISH AND Protect is a decent combo. Waterfall for STAB and Toxic for stall.
Rock Giant (Regirock) @ Life Orb

Trait: Clear Body
EVs: 4 HP / 252 Attack / 252 Defense
Adamant Nature (+Atk, -SpA)
- Earthquake
- Thunder Wave
- Dynamic Punch
- Explosion
... ... ...BOOM! (That's Explosion XD) Earthquake for thatSTAB everyone is talking about. Thunder Wave to paralyze. Dynamic punch for dat confusion. Explosion as a last resort.