I'm a bit tired, but three things:
1) UUbers is a thriving tier due entirely to
not trying to be OUBL, which is a concept that has been tried - and failed - repeatedly. Bravo to the folks who organized it, and anyone who wants to play with the bad Ubers should give it a spin.
2) Bad data is worse than no data, which is why I've supported a two week post-action minimum for 'ending' metagames like we have now. Banning Gholdengo via suspect will give us bad data, because Gholdengo especially is a cornerstone of the tier - not only will the assorted Defoggers get spammed, but it's the primary defensive steel and one of only three with instant recovery. Everything will be a clusterfluffle in that one week before DLC2.
3) I stan Maushold.
Maushold-Four @ Wide Lens
Ability: Friend Guard
Tera Type: Dark
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Population Bomb
- Bite
- Encore
- Tidy Up
Maushold brings three things to the table: hazard removal that Gholdengo can't block, a fast Encore, and a 300 BP STAB move to function as a sweeper once its checks are gone. It offers no defensive utility outside the fast Encore, which more splashable mons (most notably Iron Valiant) can also provide, and so despite being OU-viable its usage is very low.
That means teams aren't preparing for the family, especially if you're planning to be sneaky and underhanded as a Dark type. Introducing Sicilian Maushold, bringing the family into The Family.
+1 252 Atk Technician Tera Dark Maushold Bite vs. 0 HP / 0 Def Gholdengo: 320-378 (101.5 - 120%) -- guaranteed OHKO
Backed by Tidy Up and Tera Dark, Maushold's Bite becomes an engine of ghost destruction, OHKOing every OU-viable ghost except Sinistcha and Skeledirge:
+1 252 Atk Technician Tera Dark Maushold Bite vs. 248 HP / 0 Def Unaware Skeledirge: 204-242 (49.6 - 58.8%) -- 98.8% chance to 2HKO
8 SpA Skeledirge Torch Song vs. 0 HP / 4 SpD Tera Dark Maushold: 118-141 (40.8 - 48.7%) -- guaranteed 3HKO
Of course, Skeledirge is actually going to click Wisp, and if you stay in he'll alternate Slack Off and Torch Song. This is not a matchup where you're doing more than clearing hazards and forcing Skeledirge in.
+1 252 Atk Technician Tera Dark Maushold Bite vs. 252 HP / 160+ Def Sinistcha: 230-272 (66.4 - 78.6%) -- guaranteed 2HKO after Leftovers recovery
0 SpA Sinistcha Matcha Gotcha vs. 0 HP / 4 SpD Tera Dark Maushold: 127-151 (43.9 - 52.2%) -- 14.8% chance to 2HKO
Sinistcha is just barely 2HKO'd on minimum damage Bite rolls and a maximum Matcha Gotcha roll.
That's not the only advantage to Tera Dark, however - if kept in surprise, it helps maul the other most common steel in the tier:
+1 252 Atk Technician Tera Dark Maushold Population Bomb (10 hits) vs. 0 HP / 4 Def Kingambit: 210-260 (61.5 - 76.2%) -- approx. 2HKO
252+ Atk Supreme Overlord 5 allies fainted Kingambit Sucker Punch vs. 0 HP / 0 Def Tera Dark Maushold: 129-153 (44.6 - 52.9%) -- 23.8% chance to 2HKO
Comfortably surviving Kingambit's Sucker Punch, even if it switched into a three stack of Spikes and facing a last mon Kingambit, allows you to follow up with an Encore and bring something else in safely, or else Kingambit switches out and you can try to maul the next contender.
A +1 Maushold really needs to be fended off through priority or a normal resist; Population Bomb is simply too powerful for pure bulk to suffice:
+1 252 Atk Technician Maushold Population Bomb (10 hits) vs. 252 HP / 252+ Def Great Tusk: 310-370 (71.4 - 85.2%) -- approx. 2HKO after Leftovers recovery
+1 252 Atk Technician Maushold Population Bomb (10 hits) vs. 252 HP / 4 Def Ting-Lu: 420-510 (81.7 - 99.2%) -- approx. 2HKO after Leftovers recovery
+1 252 Atk Technician Maushold Population Bomb (10 hits) vs. 252 HP / 252+ Def Unaware Dondozo: 240-280 (47.6 - 55.5%) -- approx. 60.9% chance to 2HKO (!!!)
So how do the other Normal resists fare? It varies:
Wall of Calcs said:
+1 252 Atk Technician Maushold Population Bomb (10 hits) vs. 248 HP / 252+ Def Corviknight: 180-210 (45.1 - 52.6%) -- approx. 3HKO after Leftovers recovery
252+ Def Corviknight Body Press vs. 0 HP / 0 Def Maushold: 222-262 (76.8 - 90.6%) -- guaranteed 2HKO
Rocky Helmet is ~50% usage, Body Press is ~60%. This is one matchup where the normal Tera Ghost is vastly superior, since you can bypass Body Press and have much better odds.
+1 252 Atk Technician Maushold Population Bomb (10 hits) vs. 0 HP / 0 Def Heatran: 240-290 (74.3 - 89.7%) -- approx. 2HKO after Leftovers recovery
252 SpA Heatran Magma Storm vs. 0 HP / 4 SpD Maushold: 207-244 (71.6 - 84.4%) -- guaranteed 2HKO after trapping damage
Heatran wins, but takes enough damage in the process to lose most of its defensive value.
+1 252 Atk Technician Maushold Population Bomb (10 hits) vs. 0 HP / 0 Def Ogerpon-Cornerstone: 300-360 (99.6 - 119.6%) -- approx. 81.3% chance to OHKO
+1 252 Atk Technician Maushold Population Bomb (10 hits) vs. +1 0 HP / 0 Def Tera Rock Ogerpon-Cornerstone-Tera: 200-240 (66.4 - 79.7%) -- approx. 2HKO
252 Atk Cornerstone Mask Ogerpon-Cornerstone Power Whip vs. 0 HP / 0 Def Maushold: 297-351 (102.7 - 121.4%) -- guaranteed OHKO
This comes down to whether the opponent has committed their tera elsewhere already.
+1 252 Atk Technician Maushold Population Bomb (10 hits) vs. 252 HP / 4 Def Empoleon: 290-340 (77.9 - 91.3%) -- approx. 2HKO after Leftovers recovery
0 SpA Empoleon Surf vs. 0 HP / 4 SpD Maushold: 135-159 (46.7 - 55%) -- 64.5% chance to 2HKO
Empoleon doesn't do enough damage back to matter.
+1 252 Atk Technician Maushold Population Bomb (10 hits) vs. 196 HP / 0 Def Goodra-Hisui: 250-300 (71.4 - 85.7%) -- approx. 2HKO
252+ SpA Goodra-Hisui Draco Meteor vs. 0 HP / 4 SpD Maushold: 262-309 (90.6 - 106.9%) -- 43.8% chance to OHKO
Goodra-H can eat a Population Bomb and kill back, but it's a setup opportunity for whatever you bring in next, and it's vanishingly rare in OU to begin with.
+1 252 Atk Technician Maushold Population Bomb (10 hits) vs. 0 HP / 0 Def Iron Treads: 220-270 (68.5 - 84.1%) -- approx. 2HKO
252 Atk Iron Treads Earthquake vs. 0 HP / 0 Def Maushold: 198-234 (68.5 - 80.9%) -- guaranteed 2HKO
252 Atk Iron Treads Earthquake vs. 0 HP / 0 Def Maushold: 198-234 (68.5 - 80.9%) -- 50% chance to OHKO after 3 layers of Spikes
Treads has a chance to kill if Maushold switched into full hazards, and will leave you extremely low otherwise.
+1 252 Atk Technician Maushold Population Bomb (10 hits) vs. 236 HP / 0 Def Scizor: 250-300 (73.5 - 88.2%) -- approx. 2HKO
252+ Atk Choice Band Scizor U-turn vs. 0 HP / 0 Def Maushold: 253-298 (87.5 - 103.1%) -- 25% chance to OHKO
You're going to be taking hazard damage, so banded Scizor can use U-turn to kill you, and any set will kill with Close Combat.
Ideal teammates would be Knock Off providers to remove Rocky Helmets and anything that appreciates shared checks being smashed in the face. Tidy Up leaves screens intact, so you can run the mice on a screens team and become an unholy sweeper, because +2 Maushold fears only Rocky Helmet, Skeledirge, and Moltres.