Rate: My Singles OU Team

Question

Bisharp:
252 Attack, 252 HP, 4 Defense, Defiant
Adamant
Focus Sash

Knock Off
Swords Dance
Sucker Punch
Iron Head

Mega Aerodactyl
212 Attack, 44 Defense, 252 Speed, Rock Head
Jolly
Aerodactylite

Ice Fang
Aqua Tail
Stone Edge
Aerial Ace

Hydreigon
252 Sp. Attack, 252 Speed, 4 HP, Levitate
Modest
Choice Scarf

Fire Blast
U-Turn
Dark Pulse
Dragon Pulse

Serperior
252 Sp. Attack, 252 Speed, 4 HP, Contrary
Timid
Wide Lens

Dragon Tail
Giga Drain
Dragon Pulse
Leaf Storm

Slowbro
252 HP, 252 Defense, 4 Sp. Attack, Regenerator
Quiet
Slowbronite

Ice Beam
Scald
Calm Mind
Slack Off

Chansey
252 Defense, 252 Sp. Defense, 4 HP, Natural Cure
Bold
Eviolite

Toxic
Heal Bell
Seismic Toss
Soft-Boiled

Advice and constructive criticism is much appreciated. When suggesting Pokèmon keep in mind that I have no access to trading outside of Wondertrade or a Gale Wings Talonflame (sadly).

Answer 1

I like your team, but it's missing something called Skarmory! I know Skarmory doesn't need to be in every team, but I notice you lack a Spkes/ Stealth Rock setter! Both of those moves hurt many OU Pokemon you are sure to face and even destroy some Ubers! Instead of the Chansey, use Skarmory!
Skarmory@Leftovers
Ability: Sturdy
EVs: 252 SpD, 252 Spd, 4 HP
Impish Nature
Spikes
Stealth Rock
Whirlwind
Steel Wing
Spikes and Stealth Rock are self-explanatory. Whirlwind forces switches to damage Pokemon repeatedly, while Steel Wing has decent power and a chance to raise its insanely high defense stat!
Other than that, I think your team is great!