[RATE MY TEAM] hi i need help with my team this is my team for garchomp not the best

[champninjastar]

[font]Garchomp @ Garchompite 
Ability: Rough Skin 
EVs: 200 HP / 252 Atk / 56 Spe 
Adamant Nature 
- Dragon Claw 
- Rock Slide 
- Swords Dance 
- Earthquake  [/font][font]Clefable @ Leftovers 
Ability: Magic Guard 
EVs: 252 HP / 252 Def / 4 SpD 
Bold Nature 
IVs: 0 Atk 
- Stealth Rock 
- Moonblast 
- Wish 
- Soft-Boiled  [/font][font]Magearna @ Assault Vest 
Ability: Soul-Heart 
EVs: 252 HP / 252 SpD / 4 Spe 
Sassy Nature 
- Fleur Cannon 
- Iron Head 
- Volt Switch 
- Hidden Power [Fire]  [/font][font]Excadrill @ Focus Sash 
Ability: Mold Breaker 
EVs: 216 HP / 252 Atk / 40 Spe 
Lonely Nature 
- Rapid Spin 
- Earthquake 
- Protect 
- Toxic  [/font][font]Mimikyu @ Mimikium Z 
Ability: Disguise 
EVs: 252 Atk / 4 SpD / 252 Spe 
Adamant Nature 
- Swords Dance 
- Play Rough 
- Shadow Sneak 
- Drain Punch  [/font][font]Kartana @ Grassium Z 
Ability: Beast Boost 
EVs: 252 Atk / 4 SpD / 252 Spe 
Adamant Nature 
- Leaf Blade 
- Sacred Sword 
- Smart Strike 
- X-Scissor  [/font]