I'm making a monotype flying team and would like to know what /vp/ thinks about my team.

Sigilyph @ Flame Orb
Trait: Magic Guard
EVs: 252 SDef / 252 Def / 4 Spd
Calm Nature
- Cosmic Power
- Psycho Shift
- Roost
- Stored Power

Gliscor @ Toxic Orb
Trait: Poison Heal
EVs: 184 Def / 252 HP / 72 Spd
Impish Nature
- Substitute
- Protect
- Earthquake
- Toxic

Dragonite @ Leftovers
Trait: Multiscale
EVs: 252 SDef / 252 HP / 4 Atk
Gentle Nature
- Thunder
- Roost
- Superpower
- Outrage

Skarmory @ Leftovers
Trait: Sturdy
EVs: 232 Def / 252 HP / 24 Spd
Impish Nature
- Stealth Rock
- Spikes
- Roost
- Brave Bird

Salamence @ Choice Band
Trait: Moxie
EVs: 252 Spd / 252 Atk / 4 SDef
Jolly Nature
- Outrage
- Earthquake
- Brick Break
- Crunch

Gyarados @ Expert Belt
Trait: Moxie
EVs: 252 Spd / 252 Atk / 4 HP
Adamant Nature
- Dragon Dance
- Earthquake
- Ice Fang
- Stone Edge