Zpice ordered a Magnemite + Dewgong team. Very doable ask with a lot of room for adjustments. Admittedly I had 6 mag + gong teams in my builder, but I wanted to make something very cohesive and tight with synergy.





Magnemite + Dewgong gives some interesting dynamics Both are weak to fire types and fighting types. They are also slow and fearful of giving free turns to Stantler. Conversely, they both hard check Xatu. I wanted to really abuse that. What if I added 4 mons with terrible Xatu matchups?
Spikes were an obvious addition. I think there's a few routes you could take here spikesless (fire/pory + ape + grav + gloom comes to mind), but I think it always ends up weak to stantler or weezing. I wanted to give something solid though, so I went with spikes.
Weezing was also an obvious choice for the fighting check. Rapidash was another strong mon into Xatu, Exeggcute has bad synergy with Dewgong, and Gloom is funky to use on spikes. Weezing also just makes any team better, so I felt solid on this core 4 (Weez, Gong, Pine, Mag).
At this point, the team required a Dewgong/Chinchou answer. The choices were Primeape, Hitmonlee, Wigglytuff, Hitmontop, or Stantler. I didn't want to go with Tuff because it's actually pretty strong into Xatu. I also cut Hitmontop because it generally felt too passive here, but I can totally see it working. Primeape, Hitmonlee, and Stantler were all tempting choices (as they all lose to Xatu), but I ultimately decided to go with a fighting type. The main reason why is that Magnemite is a pseudo normal check, and so I wanted to add more pseudo normal checks instead of adding a direct counter (such as rhyhorn or pupitar). A full counter would feel pretty redundant with Magnemite IMO, having two normal resists. They also require more extensive support against water types that the team did not have room for. So I went into looking for the 6th mon having Lee/Ape as the 5th.
If I could a) shore up my normal MU a little more, b), get another Stantler check, and c) improve my odds against rock types, I felt Hitmonlee was the better choice. This is mostly because of the cushioning Lee provides against Octillery and opposing Magenemite, which were shaping up to be a big issue for the team. I couldn't quite figure out the puzzle until I considered that Dewgong needn't be the 'water' of the team. If I used Rest Kingler as the 'water,' I would improve my matchups against stantler, all fires, and all rock types. I could then make Dewgong Encore, which would give the extra comfort I was looking for against the Curse normals. This felt like the perfect 'click.' I was able to cover the deficiencies of Hitmonlee with extra support against Curse normals, stantler, and rocks (which Ape would be better at), while also adding another Octillery-weak Pokemon (even more justification for Lee).
The last consideration was picking the Weezing set. The team is extremely weak to primeape, so I wanted some sort of rest set over Boom. It also sort of lost to Curse Hitmontop at the moment, so I felt I needed to run Curse Weezing to match. But considering that the team is on the weaker side into Weezing itself, I was looking to optimize the Weezing set to hit all three of these issues. I landed on SB/Rest/ST/Psybeam, which gave longevity against fighting types, beat Curse Hitmontop, and could trade pretty easily (or force a Boom) from opposing Weezing. Not having standard Fire/Electric/Water coverage also turned out to be really manageable. Lee covers all the waters you can't Thunder, Magnemite totally destroys Gloom, Lee also covers opposing Magnemites switching in on your Weezing, and you have TWO! water types to make up for not having HP Water. I would say the Weezing set and the coverage on Lee are the most changeable here, but this is what I settled on.
Merry Christmas!