Your team looks good in offense but need some changes to make it work better.
Life Orb Yvelat is a very good D-Max sweeper in Nat Dex AG.
But Sucker Punch over Focus Blast and Heat Wave over Hurricane might work better.
4 Atk Life Orb Dark Aura Yveltal Sucker Punch vs. 0 HP / 0 Def
Calyrex-Shadow: 795-941 (233.1 - 275.9%) -- guaranteed OHKO
4 Atk Life Orb Dark Aura Yveltal Sucker Punch vs. 0 HP / 0 Def Dynamax
Calyrex-Shadow: 795-941 (116.5 - 137.9%) -- guaranteed OHKO
252 SpA Life Orb Yveltal Max Flare vs. 4 HP / 0 SpD Zacian-Crowned:
330-390 (101.2 - 119.6%) -- guaranteed OHKO
252 SpA Life Orb Dark Aura Yveltal Dark Pulse vs. 252 HP / 4 SpD Prism
Armor Necrozma-Dusk-Mane: 316-374 (79.3 - 93.9%) -- guaranteed 2HKO
Yveltal @ Life Orb
Ability: Dark Aura
EVs: 4 Atk / 252 SpA / 252 Spe
Hasty Nature
- Sucker Punch
- Oblivion Wing
- Dark Pulse
- Heat Wave
Best set on Yveltal.
Caly-S@Choice Specs?? I agree its good but still Sash is better on my opinion.
Calyrex-Shadow @ Focus Sash
Ability: As One (Spectrier)
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Nasty Plot
- Astral Barrage
- Psyshock
- Baton Pass
When you sense some danger just baton pass to Yveltal and start to sweep.But be sure you dont have any hazard on your side.But still Specs can be useful maybe.
Ultra-Necrozma is a powerful pokemon with Neuroforce.
But I prefer Dragon Dance over Swords Dance.
After Dragon dance it can almost Outspeed every pokemon without Scarf.
Necrozma-Dusk-Mane @ Ultranecrozium Z
Ability: Prism Armor
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Dragon Dance
- Earthquake
- Photon Geyser
- Sunsteel Strike
+1 252 Atk Neuroforce Necrozma-Ultra Earthquake vs. 4 HP / 0 Def Zacian-Crowned: 437-515 (134 - 157.9%) -- guaranteed OHKO
I think you forgot nature for Zacian-C or You wanted us to give one
Have Adamant.
And Sacred Sword is worst when comparing with Close Combat.
Zacian-Crowned @ Rusted Sword
Ability: Intrepid Sword
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Behemoth Blade
- Wild Charge
- Play Rough
- Close Combat
Have Darkceus it is a good support and check to many mons.
Arceus @ Dread Plate
Ability: Multitype
EVs: 248 HP / 136 Def / 124 Spe
Bold Nature
IVs: 0 Atk
- Calm Mind
- Recover
- Refresh
- Judgment
Perfect support and defensive
+1 252+ Atk Zacian-Crowned Close Combat vs. 248 HP / 136+ Def Arceus-Dark: 364-430 (82.1 - 97%) -- guaranteed 2HKO
You see! even Zacian can 2HKO only.
Marshadow isnt needed I think as you have already aGhost typr Caly-S.
But actuallt type Doesnt matter but still Marshadow isnt the best to fill this slot
Have a Hazard Lead Excadrill
Excadrill @ Focus Sash
Ability: Mold Breaker
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Stealth Rock
- Rapid Spin
- Rock Tomb
- Earthquake
Perfect Pokemon to lead this team
Can do both Set and Remove Hazard and Mold Breaker Ignore those Magic Bounce during Hazard set.
Pokespaste
Hope I Helped