Please Rate my OU Monotype Team that should bring me up the ladder

Question

Togekiss @ Leftovers
Ability: Serene Grace
Modest Nature (+SpA -Atk)
252 SpA/ 116 Def/ 136 SpD/ 4 HP
- Thunder Wave
- Air Slash
- HP Ground
- Heal Bell

Skarmory @ Red Card
Ability: Sturdy
Impish Nature (+Def -SpA)
252 Atk/ 252 Def/ 4 Spd
- Defog
- Stealth Rock
- Brave Bird
- Roost

Talonflame
Ability: Gale Wings
Adament Nature (+Atk -SpA)
252 Atk/ 252 Spd/ 4 HP
- Acrobatics
- Roost
- Swords Dance
- Flare Blitz

Thunderus @ Shell Bell
Ability: Prankster
Timid Nature (+Spd -Atk)
252 HP/ 252 Spd / 4 SpA
- Rain Dance
- Thunder Wave
- Thunder
- Toxic

Landerus-Therian @ Choice Scarf
Ability: Intimidate
Jolly Nature (+Spd -SpA)
252 Atk/ 252 Spd / 4 HP
- Earthquake
- U-Turn
- Stone Edge
- Brick Break

Dragonite @ Weakness Policy
Ability: Multiscale
Adament Nature (+Atk -SpA)
252 HP/ 252 Atk/ 4 Spd
- Dragon Dance
- Dragon Claw
- ExtremeSpeed
- Fire Punch

Comments

I would suggest a Band set for Talonflame.
Roost > HP Ground on Togekiss.
Earthquake > Fire Punch on Dragonite.
Your Thundurus set should be Taunt | Thunderbolt | Taunt | Hidden Power [Ice]
Go for Leftovers on Skarmory instead. Also might be interesting to try Whirlwind > Stealth Rocks, and then Change Lando-T to your Stealth Rock lead. Although that'd just be me, it works the way you have it (although if Talonflame with Band BB then you don't need Lando-T to be Scarfed)