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I strongly believe that the trio of Blissey, Alomomola, and Quagsire should be a firm staple of 99% of stall teams because of the tried-and-true security blanket all three can provide. That being said, the remaining three members of the team should generally cover hazard removal, hazards (which can be covered by Blissey to prevent teambuilding from becoming too constrained), a Steel type, a Fairy type, and of course, the threats that cannot be stopped by the aforementioned Blissey, Alomomola, or Quagsire.
Granbull provides this team with a cleric as Blissey cannot find room for either Heal Bell or Aromatherapy due to it having the responsibility to set up rocks. Intimidate in general just acts as a really convenient buffer to ease situations that would otherwise force riskier play, as it allows for it to better tackle some of the more physically imposing threats to stall, such as Heracross and Haxorus. I've opted to run Leftovers over Normalium-Z on this set, which also acts in conjunction with Protect, allowing for Granbull to both scout choiced users and for it to stick around for as long as possible. This also makes it less necessary for Granbull to be passed Wishes from Alomomola, which could prove to be useful especially when healing Granbull up might be an obvious play that could in turn be exploited. Fire Punch is probably the only other unorthodox move on the set, and it grants me an emergency button vs offensive Scizor, which could otherwise become potentially problematic.
Normally I'm not too big a fan of Defog Scizor, but it just so happened to mesh well enough with the rest of the members of the team while also offering me a stop to Mega Beedrill, some Latias sets, and most importantly, Togekiss. The Attack investment ensures that Scizor's Bullet Punch is a guaranteed 2HKO on Togekiss after Leftovers recovery, which can come in handy if rocks aren't up. The rest of the spread aims to maximize Scizor's overall bulk to help ensure it's longevity for the match.
Taunt Hydreigon rounds out the team, providing it with a nuisance to slower teams to help quicken games. It also helps halt other threats to stall such as Crawdaunt, Sub CM Chandelure, Taunt Gliscor, and Suicune. As with Granbull, I have decided to go with Leftovers instead of Draconium-Z or any other alternative to help Hydreigon 1v1 opposing mons with more ease. The set is fairly standard, but also one that has been passed up for other, more readily offensive Hydreigon sets. On stall teams however, this set is a boon in that it excels vs mostly all playstyles, and this particular trait helps to lessen the impact of a matchup advantage versus stall teams in general.