SM Ubers Coming back after not playing since Gen 5, Rate this Team

[lwshamilton44]

After playing Ubers for a couple days on Showdown, I feel like I've got a general sense of the meta, and I wanna see if you guys have some advice on my Ubers team. FWIW, I got to 1500 ELO on Showdown in Gen 7 Ubers with this team, but I don't know if that's considered high ELO or not.

Arceus-Ground @ Earth Plate
Ability: Multitype
EVs: 252 HP / 4 SpA / 252 Spe
Timid Nature
IVs: 0 Atk
- Judgment
- Ice Beam
- Recover
- Stealth Rock

Giratina @ Leftovers
Ability: Pressure
Shiny: Yes
EVs: 252 HP / 4 SpA / 252 SpD
Calm Nature
IVs: 0 Atk
- Defog
- Thunder Wave
- Hex
- Will-O-Wisp

Groudon-Primal @ Red Orb
Ability: Desolate Land
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Precipice Blades
- Fire Punch
- Brick Break
- Dragon Tail

Mewtwo-Mega-Y @ Mewtwonite Y
Ability: Insomnia
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Psystrike
- Grass Knot
- Ice Beam
- Aura Sphere

Deoxys-Attack @ Life Orb
Ability: Pressure
EVs: 4 Atk / 252 SpA / 252 Spe
Rash Nature
- Shadow Ball
- Superpower
- Psycho Boost
- Ice Beam

Necrozma-Dusk-Mane @ Ultranecrozium Z
Ability: Prism Armor
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Swords Dance
- Photon Geyser
- Earthquake
- Stone Edge

 

[Gross Sweep]

Welcome to Smogon! I'm locking your RMT for the time being as the forum rules require that you provide at least 3 lines of descriptions for each Pokemon to explain their roles. Please read the rules carefully and take a look at Team Showcase to see the level of detail we require. PM me with updated descriptions and I'll be happy to unlock this.