Not trying to interrupt any topics y’all are discussing but I wanted to do a little experiment. I’ve been wanting to know for a while what stall team is most efficient based on the usage of their auto lose matchups, so I took some teams which represented a good range of stall builds, looked on Pikanalytics, and posted the results here.
So here’s how it’s going to work. I’m going to list some teams which I’m going to look at, find their auto lose matchups, and find the probability of running into one. These weaknesses can be combinations, or specific threats. The team with the lowest probability will be the most efficient, and the team with the highest will be the least efficient. For quality purposes, I ignored any stall style/team weak to Heatran because a stall that’s weak to Heatran is bad. I also ignored any hazard weak stall teams because Corviknight is also common. I’m going to be explaining how I picked the threats for each one.
(I’m not going to factor in taunt NP Tornadus, Crawdaunt, Adamant LO Weavile, Arctozolt, and other stall matchups that 90% of stalls are weak to. Some of these threats are dropping in viability like Crawdaunt, but others like Arctozolt are rising.)
If a threat can be safely played around in some way, I won’t add it to the list. These Pokémon may force non locked matchups (matchups where it’s possible for your team to be broke), but it will not be completely impossible for you to win against them. I may make another post including these threats that can be played around but for now, I want to keep only the ones where if your opponent doesn’t make any mistakes, they will win. Now, here are the teams.
Teams





AV Reun stall by ??? (random team that I saw win crazy matchups)





- Safety Googles Shedinja stall by Htcl





- ABR hazard stack (Not a stall team but it has 5 stall mons.)





- Kyurem semi stall by Pierrick





- Blimax spam team





- Thats quite unfor Shedinja stall





- Quaglover stall





- Umbreon stall by PedroGreg
Again, I’m going to be explaining every auto lose matchup I find for each team. Keep in mind, there are many team combinations that can force non locked matchups against them, but as long as you don’t run into an auto lose matchup, you still have a good chance of beating them. Alright now let’s finally get into the threats for each.
AV Reun Stall -

(whirlpool)
There isn‘t much to criticize about this stall team. Future sight is beaten, and things like Hex Twave Dragapult are able to be played around with AV Reun and Spdef Pex. Howevef, it has an iffy MU against Dracozolt, Whirlpool Fini, and Thundurus-T.
Safety Googles Shedinja Stall -

(taunt)
Another good one. I’d say Moltres is enough to beat Heatran since it can defog the rocks and force it out. Hyper offense is a problem since you can’t defog the hazards, but other than that it seems fine. (Banded ttar and SD Bulu are winnable matchups with leftovers clef and pressure corv for the stone edges. Not going to factor those.)
ABR Hazard Stack -
Many difficult matchups are winnable by using Koko to venge kill. It keeps the offensive pressure but falls a little short against some setup like Cloyster. Screen Pex beats future sight and Scizor beats Kyurem and Lele. Rocky helmet is clearly better here for Skarmory so Magnezone is a problem.
Kyurem semi stall-

(Specs and CB)
Solid team when it comes to most matchups, but it loses to specs Kyurem and Lele. Banded ttar is also a problem because it forces a Torn T and Kyurem out, and it can really slow it down. Sub roost Kyurem handles future sight.
Blimax spam team -

(both banded)
I may be biased on this one but if you play correctly and ultilize Tornadus-T and Hippowdon, you can beat all forms of Future Sight. It loses to banded melm and ttar, but the other weaknesses can be played around or venge killed.
Shedinja Stall -

+

or
There’s not really much to say about this stall team. It loses to hail and sand setters like normal Shedinja stall teams. Hazards can still be overwhelming at times and SD Kartana is a threat, but these can be played around.
Quag lover stall-

(Whirlpool)
This team loses to future sight and mew hyper offense. How does that preform? Let’s see.
Umbreon Stall -
Super good stall team. Taunt Mew here is excellent, the sweep prevention is good, but it loses to Kyurem and Lele.
RNG Calcs (1695+ stats)
Mon MU RNG is in the order that I listed them
(2) AV Reun - 2.3%, 2.36%, 0.88%
(3) SG Shedinja stall - 2.3%, 4.27%
(7) ABR Hazard stack - 8.34%, 5.43%
(5) Kyurem semi stall - 5.26%, 4.89% , 1.55%
(1) Blimax spam team - 2.46%, 1.55%
(4) Shedinja Stall - 6.21%, (less than 0.40% for both) , 2.96%
(8) Quag lover stall - 8.22% , 5.87% , 8.81% , 2.36% , 4.27%
(6) Umbreon stall - 4.89% , 5.26% , 2.3%
So those are the RNG stats for a fighting chance of winning for each team. There’s a lot to talk about here but if you do the math, the Quag lover stall is the least efficient, and the Blimax spam team is the most efficient (if you don’t count it as future sight weak). Letme know if I got anything wrong. I rounded the values to the nearest hundredth.
Result Analysis
What really surprised me was how much future sight factored in. Even if you can’t beat Urshifu + future sight, you need something that can beat everything else because it’s huge and almost as important as dealing with Heatran. Addtionally, Magnezone, Tapu Lele, and Kyurem also make a big factor in the RNG to win a game, so don’t ignore those.
So when building a stall team, you should try to have a way to beat Kyurem and Lele, future sight, Magnezone, and constant hazard stacking. The top 4 (except the safety goggles Shedinja stall) deal with all of these. The ones at the bottom however lack on checking these things and have higher RNG to win a game.
It’s really nice how even the teams at the bottom of this experiment are still good against most of the meta, and stall is definitely proven to be a lot better now. So that’s all I’m going to say about this for now. If you have any other thoughts, let me know! Try this on your own stall teams if you want.
Also let me know if you happen to find a stall/semi stall team better than the top 2 ones for this experiment. Would greatly appreciate it and I’d love to look at them!
Happy stalling!