With NDW's suspect coming to a close very soon, I felt I should post the team I used throughout most of the NDW metagame. This is coincidentally, the first time I've ever made an RMT, and I'm proud to post a team I have as much faith in as this one. So let's get into it.
The Team:
I built this team around

Zama-C and

Darkceus. The two synergize excellently as Zamazenta is able to wall Pokemon like

Zacian so

Darkceus can clean late game and in turn counters many Pokemon that threaten

Zama, like

Giratina,

Necrozma, and

Chi-yu.

Why Pray to God? (Arceus-Dark) @ Dread Plate
Ability: Multitype
Tera Type: Poison
EVs: 248 HP / 84 SpD / 176 Spe
Timid Nature
-Calm Mind
-Taunt
-Judgment
-Recover
This is a standard Taunt Arceus aside from the 84 special defense EVs. 84 Special Defense patches up the team's weakness to

Kyurem-White, dodges the 2hko from

Palkia-Origin's Hydro Pump, while losing only a few speed tiers(

rmoon and ties with other 120s).

Darkceus functions as a blanket special wall on this team, as most special breakers cannot prevent it from stacking Calm Minds, as well as being an excellent win condition versus bulkier teamstyles.

Saturn Ring (Zamazenta-Crowned) @ Rusted Shield
Ability: Dauntless Shield
Tera Type: Water
EVs: 64 Atk / 244 Def / 200 Spe
Jolly Nature
-Iron Defense
-Body Press
-Crunch
-Behemoth Bash
A standard set once again, 64 atk for

NDW, 200 speed jolly doesn't lose you any speed tiers, so is a better use of EVs than max speed.

Zamazenta is an extremely important member of the team, with its supreme bulk bailing you out of sticky situations more than you'd expect. I chose Behemoth Bash over the typically better Roar/Rest for Tera Fairy

NDW and

Darkceus, as otherwise, Tera can turn the tables, turning your

Zama into fodder.

Touch Your Soul (Giratina) @ Heavy-Duty-Boots
Ability: Pressure
Tera Type: Fairy
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
-Dragon Tail
-Thunder Wave
-Defog
-Rest
I chose

Giratina as my defogger to patch up the stacked fighting weaknesses from

and

. Heavy-Duty-Boots is a deviation from the standard Leftovers, which ensures my defogger is unfazed by the hazards it clears. Thunder Wave on Giratina is absolutely amazing. Getting a Thunder Wave off on the Switch consistently punishes common checks like

Kyurem-White,

Chi-Yu,

Darkceus, and

Zacian. Turns of full Paralysis allow it to burn off Sleep turns more easily, and can kickstart a

Darkceus or

Zama sweep.

Ah (Skarmory) @ Leftovers
Ability: Sturdy
Tera Type: Poison
EVs: 248 HP / 252 Def / 8 SpD
Bold Nature
-Spikes
-Body Press
-Roost
-Whirlwind
I didn't have entry hazards, a ground immune, or a Steel type yet, so

Skarm immediately came to mind as it fit all of these.

Skarm forms an excellent core with

Tina as it resists all of

Skarm's weaknesses while also spinblocking.

Darkceus and

Zama both benefit from spike support to chip down their checks.

Skarmory is also excellent into Trick Room, as it can stack Spikes while phasing out opposing setters.

Starz (Zacian) @ Heavy-Duty-Boots
Ability: Intrepid Sword
Tera Type: Ground
EVs: 64 HP / 252 Atk / 192 Spe
Jolly Nature
-Swords Dance
-Play Rough
-Close Combat
-Tera Blast

Zacian completes a Dragon/Fairy/Steel core and is a solid late-game win condition. I put it on for opposing

Porigins, because even though

beats it 1v1, it cannot secure a clean OHKO like

Zacian can. It has 64 hp Evs because you don't really need max speed on

Zacian, as it only misses a couple of speed tiers, which are all Pokemon your walls handle easily.

Love & Rage (Chi-yu) @ Choice Scarf
Ability: Beads of Ruin
Tera Type: Fire
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
-Dark Pulse
-Fire Blast
-Overheat
-Memento

Chi-yu was added to outspeed opposing

Zacian and

Deoxys. Memento was added over Psychic to give your many setup sweepers opportunities. Are you clicking it often? No. Are you clicking it more than you'd click Psychic? yes. Fire Blast is personal preference because I like the ability to Ohko Zacian without locking into Overheat giving something free turns.

Chi-yu is a

Chi-yu not much to say to be honest.
Threats and Usage tips

Kyurem can really screw this team over if they manage to break through your

Darkceus you can easily get swept. Teraing

Giratina to get off a Twave, Getting hazards with

Skarm to limit its switchins, or trading your

Zacian are all options to deal with it in a pinch.

Palafin gets a kill almost every switch in if you don't keep

Giratina healthy, usually though you should be fine.

Chi-yu, though not usually an issue, can break through Arceus-Dark under sun. Make sure to limit entries with hazards, and take advantage of Giratina's fire resist. Very winnable though.