Courtesy of the legend that is
Thunder Pwoell:
Blaziken @ Power Herb/Grassium Z
Rash Nature
Ability: Speed Boost
EVs: 4 Atk / 252 SpA / 252 Spe
- Work Up
- Fire Blast
- Close Combat
- Solar Beam
Handle certified Omari P-grade heat with care. Use with Pex-Be-Gone spray for best results, have a Pursuit user for Mega Latias, and don't be afraid to Work Up twice.
+1 252+ SpA Blaziken Bloom Doom (190 BP) vs. 252 HP / 4 SpD Toxapex: 223-263 (73.3 - 86.5%) -- guaranteed 2HKO after Stealth Rock
+1 252+ SpA Blaziken Solar Beam vs. 252 HP / 64 SpD Tapu Fini: 290-342 (84.3 - 99.4%) -- 75% chance to OHKO after Stealth Rock
+1 4 Atk Blaziken Close Combat vs. 252 HP / 0 Def Heatran: 432-510 (111.9 - 132.1%) -- guaranteed OHKO
+1 252+ SpA Blaziken Fire Blast vs. 252 HP / 0 SpD Landorus-Therian: 316-373 (82.7 - 97.6%) -- 68.8% chance to OHKO after Stealth Rock
You could probably do something similar with Scorching Sands>Solar Beam and Groundium Z, but the main draw of this set (unless you really want that Bloom Doom power) is saving the Z-move for a different sweeper, especially when your opponent is likely to predict Blaziken to have the Z-move, which lets you surprise punch them early with a different sweeper before Blaziken cleans house.