I don't want to probably write pages about this but I think there's been a ton of discussion in the Ubers discord about ultra necrozma making playing around necrozma a glorified guessing game. Pretty much in short, both unnecro and regular DM have different defensive counterplay and different checks. Unnecro for example can be trapped and rked by gengar but regular DM is bulky enough to just neuter gengar. Pdon can check regular DM fine mostly but if necro sds on a switch and ultra bursts, you lose your pdon very freely. Support arcs also have similar issues and if you guess what the DM/unnecro set is wrongly, you give it a free turn to cause havoc and remove a portion of the team or your support arc which has p big implications. To compound this, ultra necro can run a ton of different sets. It can run the good old sd, with outrage to break through darks, it can run calm mind that takes advantadge of some arcs like wisp waterceus and also escape being checked by support groundceus or a groundceus that hasn't cmed etc. It can even run rocks ultra and nuke your marsh. This along with the multitude of sets DM can run makes playing vs unnecro a guessing game and a headache to play around. I think inherently the tier can handle DM and it's a healthy addition but something should be done to address unnecro.
So in short, I propose that for the next upcoming USM ubers tours, we ban the z crystal ultranecrozium Z so that unnecro can't ultra burst. This would enable the tier and the playerbase to sort of determine whether unnecro really is a problem and how much better the tier is with or without unnecro similar to what was done in the oras invitational for darkrai. Fc can probably handle the stuff about surveys and the logistics of what tours to cut the z crystal from for the future if there's enough support but after talking to a lot of people, I feel there is some inherent support for this idea. I was a bit lazy in making this post but I'm happy for more discussion about unnecro to be fostered to determine where the playerbase stands on this subject.
So in short, I propose that for the next upcoming USM ubers tours, we ban the z crystal ultranecrozium Z so that unnecro can't ultra burst. This would enable the tier and the playerbase to sort of determine whether unnecro really is a problem and how much better the tier is with or without unnecro similar to what was done in the oras invitational for darkrai. Fc can probably handle the stuff about surveys and the logistics of what tours to cut the z crystal from for the future if there's enough support but after talking to a lot of people, I feel there is some inherent support for this idea. I was a bit lazy in making this post but I'm happy for more discussion about unnecro to be fostered to determine where the playerbase stands on this subject.