This is the team I plan to use competitively on Wi-fi, tell me what you think and what improvements can be made. I haven't actually used this team in a competitive battle yet.
Garchomp @ Salac Berry
Sand Veil
Lonely
-Dragon Claw
-Earthquake
-Fire Fang
-Swords Dance
Electivire @ Muscle Band
Motor Drive
Adamant
-Thunderpunch
-Ice Punch
-Earthquake
-Brick Break
Lucario @ Life Orb
Inner Focus
Mild
-Aura Sphere
-Dragon Pulse
-Shadow Ball
-Vacuum Wave
Starmie @ Choice Specs
Natural Cure
Modest
-Surf
-Psychic
-Ice Beam
-Thunderbolt
Weezing @ Black Sludge
Levitate
Bold
-Sludge Bomb
-Will-O-Wisp
-Haze
-Pain Split
Regice @ Leftovers
Clear Body
Careful
-Ice Beam
-Thunderbolt
-Rest
-Thunder Wave
Garchomp @ Salac Berry
Sand Veil
Lonely
-Dragon Claw
-Earthquake
-Fire Fang
-Swords Dance
Electivire @ Muscle Band
Motor Drive
Adamant
-Thunderpunch
-Ice Punch
-Earthquake
-Brick Break
Lucario @ Life Orb
Inner Focus
Mild
-Aura Sphere
-Dragon Pulse
-Shadow Ball
-Vacuum Wave
Starmie @ Choice Specs
Natural Cure
Modest
-Surf
-Psychic
-Ice Beam
-Thunderbolt
Weezing @ Black Sludge
Levitate
Bold
-Sludge Bomb
-Will-O-Wisp
-Haze
-Pain Split
Regice @ Leftovers
Clear Body
Careful
-Ice Beam
-Thunderbolt
-Rest
-Thunder Wave