^^^Agreeing with SM^^^
Ultra-Necrozma, as everyone knows, is an S--ranked offensive threat. It virtually necessitates specific Scarfers (like Bisharp!), Mega Gengar, or a Mewtwo on BO and Balance builds to prevent getting swept. Even then most of those lose to CM Ultra. There's very minimal defensive counterplay the checks every single option Ultra-Necro can run. The best option to beat Ultra-Necro is typically to get chip damage off, sack a Mon, then try to revenge. Enter Gravity Ultra-Necrozma:
Necrozma-Dusk-Mane @ Ultranecrozium Z
Ability: Prism Armor
EVs: 252 Atk / 4 Def / 252 Spe
Jolly Nature
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Gravity
- Outrage / Earthquake
- Photon Geyser
- Swords Dance
Gravity is a lesser-used playstyle typically utilizing glass-cannons to put mons to sleep, setup, and sweep. The issue with the playstyle is that no sleep-inducing glass-cannons, like Darkrai and Mega Gengar, get Gravity. Vivillon is like it's own thing, so that won't be mentioned here. The Gravity setters in the playstyle, like Deo-S, Deo-A, and Sableye, are forced to use passive ways to get themselves out, like Eject Button. Otherwise Gravity is fairly easy to maneuver around as you just don't kill the setter until the last turn. This set is essentially taking a play out of the Gravity Xern playbook.
Thimo's Xurkitree Gravity Webs utilizes a Geo Gravity Xern. Geo forces the opponent to kill Xern asap rocky, for fear of being swept. No dancing around it without multiple sacks. The forced kill allows the Z-Hypnosis Xurk to come in with Gravity up, sleep something, setup, and ideally end the game. Ultra-Necro's about to do the same thing. SD is Ultra's Geomancy and turns it into a mon that can no longer be danced around. Unfortunately, Ultra-Necro itself isn't really able to take advantage of the Gravity with inaccurate moves.
Instead of posting calcs (since this Ultra isn't about sweeping),
I'll instead post a dual-Z team that I built utilizing Ultra-Necro to set Gravity for Z-Darkrai. The team is flat out 6-0'd by AG-savior Z-Koko, but that's beside the point. Ultra-Necro's job is to force the opponent to KO, meaning that Darkrai is able to come in with Gravity still up and attempt to end the game. It's a tactic that requires at least two mons to work effectively, but one of those mons is the most forgotten sweeper this gen capable of 6-0'ing unprepared opponents.