Glass Houses






Prepare yourselves for this one.
This team started with a plan. A plan to handle webs. Mega Diancie is a nice answer to Smeargle in theory, but it's also really obvious, and they are probably not going to lead Smeargle if they see Mega Diancie. If they have a good anti-lead for it, then you won't be able to deny webs forever. Denying it temporarily is still good, but I'm not satisfied with that. Smeargle will still come in, and Smeargle will still set webs. But what I'm more worried about is Smeargle itself.
It's no secret I hate Smeargle. Counterplay heavily depends on what status move it's running, which is something you can really only guess. Combine that with the potential for Mortal Spin, and Smeargle can really catch you off guard and ruin your plans. If I know what Smeargle has, I can deal with it, webs, and its team, but if I'm flying blind, then I'll end up removing webs only to die to a Zacian I am unprepared for.
The first step of the plan is Ditto. Ditto is obviously good against webs, and while I could have used Choice Scarf Yveltal, I've used that enough, and wanted to try something else. Furthermore, Ditto can potentially let me scout what set Smeargle is running. The next step is Garganacl. Garganacl does not fear any of the status Smeargle can inflict, and as such is a reliably safe switch-in to Smeargle.
So uh, you might notice something. My team doesn't have Garganacl. That ultimately didn't work out for various reasons, so in its place I have Ferrothorn. Ferrothorn is immune to both Spore and Mortal Spin, and while it isn't immune to Nuzzle, it really doesn't care about paralysis that much. Leftovers also makes any attempt by Smeargle to do damage to it futile, and Iron Barbs actively hurts it for that which I could potentially pair with Spikes. It should be fully capable of checking anything else I need it to after Smeargle.
That's really all I needed, but I wanted to ensure that Smeargle users have a horrible time. If Ditto reveals that Smeargle doesn't have Perish Song, I will find an opening to send in Dragon Dance Zygarde, and from there probably sweep their whole team.
From there, I added Offensive Ho-Oh for hazard removal and Defensive Primal Groudon to deal with Zacian. I also added Mega Diancie back both to further bully Smeargle and because it matches up well against many common Pokemon on Sticky Webs.
But there were a few problems. My team is both quite passive and somewhat frail. Solving the second problem was relatively straightforward. Just make Zygarde more bulky. Specifically, I made it as physically bulky as possible (while maintaining a HP value divisible by four in base for Substitute shenanigans and divisible by 16 in Complete form to get the most out of leftovers) while also making sure Choice Band Marshadow always triggers Power Construct with Poltergeist so it will never be able to 2HKO me.
The other issue was a lot harder to solve. Even with Tera Flying, Ho-Oh alone isn't scary enough. But after a while, I realized something. If I am using Mega Diancie, they probably aren't getting rocks up. So, I did something very stupid. I put Choice Band Ho-Oh on a team with no other hazard removal. This was a risky play, but I feel the damage it deals with Tera Flying Brave Bird, even after relocating its Attack EVs elsewhere, was more than worth it. I still needed a lot of bulk on it, so I sacrificed some speed, leaving just enough to outspeed neutral nature primals.
I had this hyper specific EV spread ready that barely met so many benchmarks, but then I realized it didn't avoid a 2HKO from Choice Specs Lunala, so I scrapped it. What does live that is 248 HP, and adding 16 Special Defense EVs lets it live +1 Origin Pulse from Timid Wallbreaker Primal Kyogre after it Terastalizes. From there, I added 76 Defense EVs to let it live Tera Ghost Poltergeist from Choice Band Marshadow, and put the remaining 12 EVs into Attack. While still significantly less bulky than the average Ho-Oh, it does meet important benchmarks, notably surviving a +1 Wild Charge from Zacian. And even with few investments in Attack, the Choice Band boosts its Attack greatly, letting Tera Flying Brave Bird OHKO Wallbreaker Primal Kyogre and giving it a high chance to OHKO Lunala after Stealth Rock.