Rate my Gen 7 OU team

Question

I created a team for Gen 7 OU and so far I have an okay winning rate but idk if its actually good or I’m just getting lucky. I just want thoughts and opinions on it.

Charizard-Mega-X @ Charizardite X
Ability: Tough Claws
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Dragon Dance
- Flare Blitz
- Outrage
- Brick Break

Skarmory @ Rocky Helmet
Ability: Sturdy
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
IVs: 0 Atk
- Roost
- Spikes
- Whirlwind
- Defog

Tapu Koko @ Choice Specs
Ability: Electric Surge
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Thunderbolt
- Hidden Power [Ice]
- Volt Switch
- Dazzling Gleam

Greninja-Ash (M) @ Life Orb
Ability: Battle Bond
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
- Ice Beam
- Hydro Pump
- Dark Pulse
- Extrasensory

Excadrill @ Air Balloon
Ability: Sand Rush
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Earthquake
- Swords Dance
- Iron Head
- Rock Slide

Clefable @ Leftovers
Ability: Unaware
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
IVs: 0 Atk
- Stealth Rock
- Moonblast
- Moonlight
- Calm Mind

Answer 1

Greninja-Ash (M) @ Life Orb
Ability: Battle Bond
EVs: 4 Atk / 252 SpA / 252 Spe
Hasty Nature
- Water Shuriken
- Hydro Pump
- Ice Beam
- Gunk Shot
Instead of dark pulse you might keep gunshot because if your opponent uses tapufini or tapubulu you can counter them by this others also extrasensory will counter only fight,poison but as per weakness it counters only fighting instead you might go with water shuriken because it is 20 power because of ablity×always hit3=60 also this move as 1+priority also this will be best nose cut for those who keeps focus sash other are ok
Clefable @ Life Orb
Ability: Magic Guard
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
IVs: 0 Atk
- Calm Mind
- Soft-Boiled
- Moonblast
- Fire Blast
Because of magic guard clefable won't get any damages from life orb also its move will be boost
Also fire blast will attack steel opponent which are vulnerable to clefable
Skarmory @ Leftovers
Ability: Sturdy
EVs: 252 HP / 232 Def / 24 SpD
Impish Nature
- Steel Wing
- Roost
- Spikes
- Stealth Rock
If anyone uses taunt that its skarmory will be using struggle which will not damage ghost type
For name sake stell wing is pity less risky
Tapu Koko @ Electrium Z
Ability: Electric Surge
EVs: 128 Atk / 128 SpA / 252 Spe
Naive Nature
- Brave Bird
- Thunderbolt
- Dazzling Gleam
- U-turn
Thunder bolt z move with electric surge causes this move having base power of 262.2 which is very power full and uturn just to do damage and switch out dazzling gleam for decent special and brave bird for strong physical move especially to counter high bulky speckaldefensive pokemon with less phy def like blissey,chansey and snorlax
Excadrill @ Focus Sash
Ability: Sand Force
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Swords Dance
- Earthquake
- Iron Head
- Rapid Spin
Sand rush just speeds the excadrill in sandstorm but sand force boosts the ground,steel,rock moves by 1.3 also rapin spin will clear the hazards of your side which is better than defog which clears both side hazards

Charizard-Mega-X @ Charizardite X
Ability: Blaze
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Dragon Dance
- Dragon Claw
- Flare Blitz
- Earthquake
Outrage will confuse charizard x also players might switch there fairy pokemon to counter it so because dragon claw is riskless. And you might go with earthquake so including sweeping steel and rock,poison and fire,fireand rock,also fire and steel combo where brick break sweeps dark and normal,dark and rock,steel and rock and earthquake is even powerful than brick break