Rate my team (National Dex OU)

[Metal64]

this is a team that I eve using for a while, I managed to win a lot of battles with them, but I still want to improve them.

Chansey (F) @ Eviolite
Ability: Natural Cure
EVs: 248 HP / 8 Def / 252 SpD
Careful Nature
- Soft-Boiled
- Seismic Toss
- Heal Bell
- Toxic

Rillaboom @ Life Orb
Ability: Grassy Surge
EVs: 108 HP / 252 Atk / 148 Spe
Adamant Nature
- Swords Dance
- Drain Punch
- Grassy Glide
- Darkest Lariat

Garchomp @ Rocky Helmet
Ability: Rough Skin
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
- Dragon Tail
- Earthquake
- Endure
- Rest

Hoopa-Unbound @ Choice Scarf
Ability: Magician
EVs: 72 Atk / 184 SpA / 252 Spe
Hasty Nature
- Hyperspace Fury
- Drain Punch
- Psyshock
- Dark Pulse

Magearna @ Leftovers
Ability: Soul-Heart
EVs: 180 HP / 188 SpA / 140 SpD
Calm Nature
IVs: 0 Atk
- Calm Mind
- Fleur Cannon
- Flash Cannon
- Pain Split

Toxapex @ Black Sludge
Ability: Regenerator
EVs: 148 HP / 204 Def / 156 SpD
Impish Nature
- Haze
- Scald
- Recover
- Knock Off

 

[Divine Retribution]

Hoopa isn't present in Sw/Sh, which, given the presence of Rillaboom, is what I assume this team is built for. If it's intended for some sort of unofficial NatDex format, you should really specify that.

 

[Metal64]

Hoopa isn't present in Sw/Sh, which, given the presence of Rillaboom, is what I assume this team is built for. If it's intended for some sort of unofficial NatDex format, you should really specify that.

Oh yeah, I forget to mention that this team is for National dex gen 8.