Rate my Gen 7 Ubers team

Question

Any improvements are welcome
Blaziken-Mega @ Blazikenite
Ability: Speed Boost
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Low Kick
- Flare Blitz
- Stone Edge
- Swords Dance

Deoxys-Speed @ Focus Sash
Ability: Pressure
EVs: 252 HP / 4 Def / 252 Spe
Timid Nature
IVs: 0 Atk
- Stealth Rock
- Taunt
- Magic Coat
- Spikes

Yveltal @ Life Orb
Ability: Dark Aura
EVs: 4 Atk / 252 SpA / 252 Spe
Mild Nature
- Dark Pulse
- Oblivion Wing
- Taunt
- Sucker Punch

Necrozma-Dusk-Mane @ Solganium Z
Ability: Prism Armor
EVs: 248 Atk / 8 SpD / 252 Spe
Adamant Nature
- Rock Polish
- Swords Dance
- Sunsteel Strike
- Earthquake

Arceus-Fairy @ Pixie Plate
Ability: Multitype
EVs: 252 HP / 4 Def / 252 Spe
Timid Nature
- Calm Mind
- Judgment
- Earth Power
- Recover

Wobbuffet @ Custap Berry
Ability: Shadow Tag
EVs: 252 HP / 4 Def / 252 SpD
Calm Nature
- Encore
- Counter
- Mirror Coat
- Destiny Bond

Answer 1

I really like your team, but maybe you could replace wobbufett for marshadow?
Marshadow could just pick off threats, just like wobbufett, and even turn around the stat changes. Just an idea, though. I assume from the set that that's wobbufett's main job.
A sample set:
Marshadow @ Focus Sash
Ability: Technician
EVs: 252 Atk / 4 SpA / 252 Spe
Naive Nature
- Close Combat
- Spectral Thief
- Shadow Sneak
- Hidden Power [Ice]

Comments

I think rock tomb is better than hidden power because it covers Ho-Oh.

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I think Hidden Power may be resourceful if he Loses Arceus (and therefore a clear answer to Mega-Salamence and Rayquaza) and Blaziken already has Stone Edge, but I could be wrong. :P

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Thanks guys!