Yo, it's the hyperman set
Gumshoos from Unranked to C-
Stakeout Frustration hits incredibly hard and since Stoutland left the tier I believe this Pokemon has a niche now in being a strong Normal type wallbreaker as it can hit a lot harder than Kangaskhan and can gain momentum with U-turn or hit Rock and Steel type switch ins hard with Earthquake. Gumshoos can also afford to invest in HP meaning it can often live a hit before firing back. Here I will show some calcs and replays of this working in action.
- +2 252+ Atk Choice Band Gumshoos Return vs. 252 HP / 252+ Def Weezing: 309-364 (92.5 - 108.9%) -- guaranteed OHKO after Stealth Rock and Black Sludge recovery
- +2 252+ Atk Choice Band Gumshoos Earthquake vs. 252 HP / 56+ Def Regirock: 306-360 (84 - 98.9%) -- 75% chance to OHKO after Stealth Rock and Leftovers recovery
- +2 252+ Atk Choice Band Gumshoos Earthquake vs. 248 HP / 8 Def Spiritomb: 296-349 (97.6 - 115.1%) -- guaranteed OHKO after Stealth Rock
- +2 252+ Atk Choice Band Gumshoos Return vs. 252 HP / 64 Def Eviolite Gurdurr: 346-408 (92.5 - 109%) -- 87.5% chance to OHKO after Stealth Rock