Rate my competitive Uber team

Question

Lunala @ Zoom Lens
Ability: Shadow Shield
Shiny: Yes
EVs: 44 HP / 92 Def / 240 SpA / 132 SpD
Quiet Nature
- Moongeist Beam
- Focus Blast
- Ice Beam
- Thunder

Groudon-Primal @ Red Orb
Ability: Desolate Land
Shiny: Yes
EVs: 252 Atk
Serious Nature
- Stealth Rock
- Precipice Blades
- Earthquake
- Stone Edge

Rayquaza-Mega @ Quick Claw
Ability: Delta Stream
Shiny: Yes
EVs: 4 HP / 252 Def / 252 SpD
- Dragon Ascent
- Dragon Dance
- Earthquake
- Extreme Speed
(I know it is not in uber according to smogon but it is for the pokemon showdown and friendly battles and we have allowed it)

Yveltal @ Leftovers
Ability: Dark Aura
Shiny: Yes
EVs: 129 Atk / 129 SpA / 252 Spe
- Oblivion Wing
- Sucker Punch
- Dark Pulse
- Knock Off

Xerneas @ Power Herb
Ability: Fairy Aura
Shiny: Yes
EVs: 248 HP / 252 SpA / 8 SpD
Modest Nature
- Geomancy
- Moonblast
- Thunder
- Focus Blast

Arceus-Electric @ Electrium Z
Ability: Multitype
EVs: 128 HP / 128 Atk / 252 SpA
Lonely Nature
- Energy Ball
- Judgment
- Psychic
- Earthquake

Comments

Replace Arceus with Kyogre for better typing and for a Groudon check. Give Lunala a Lunalium Z to break certain walls and 252 HP/252 Def/4 SpD bold for more bulk and slightly more speed. Replace its thunder with psyshock for STAB and hitting physical walls. Give Groudon 252 Atk/4 SpD/252 Spe adamant to outspeed more stuff and have slightly more physical attack. Replace its earthquake with rock polish to raise speed and possibly sweep. Give Rayquaza a life orb and 4 HP/252 Atk/252 Spe adamant to hit harder. Give Yveltal 4 Def/252 SpA/252 Spe timid to take advantage of its stronger special attacks. Replace its knock off with U-turn to reduce the need to predict switches.

Answer 1

This is your team but fixed:

Lunala @ Lunalium Z
Ability: Shadow Shield
Timid Nature
252 Spe/252 SpA/4 Def
IVs: 0 Atk
- Calm Mind
- Moongeist Beam
- Focus Blast
- Psyshock

Groudon-Primal @ Red Orb
Ability: Drought --> Desolate Land
Relaxed Nature
252 HP/56 Def/200 SpD
- Stealth Rocks
- Overheat
- Precipice Blades
- Toxic

Rayquaza-Mega @ Life Orb
Ability: Air Lock --> Delta Stream
Jolly Nature
252 Spe/252 Atk/4 Def
- Dragon Dance
- Dragon Ascent
- Earthquake
- Extreme Speed

Marshadow @ Life orb
Ability: Technician
Jolly Nature
252 Spe/252 Atk/4 Def
- Shadow Sneak
- Spectral Thief
- Close Combat
- Rock Tomb

Xerneas @ Power Herb
Ability: Fairy Aura
Modest Nature
252 SpA/172 Def/84 Spe
IVs: 0 Atk
- Moonblast
- Geomancy
- Focus Blast
- Hidden Power (Rock)

Arceus @ Normalium Z
Ability: Multitype
Adamant Nature
EVs: 252 Atk/124 Spe/132 HP
- Swords Dance
- Extreme Speed
- Shadow Claw
- Refresh

Comments

Why are there two Z-crystals?

Answer 2

http://pokepast.es/fc4400a552e8e455

Revised team

Comments

Why would you have Groudon know two ground attacks? One is enough.