+ U-Turn + 11 Spe
good enough i think 102 speed is pretty neat and it makes a it a pretty solid rocker with a set of knock,eq,u-turn, stealth rocks which is pretty darn good as it can cripple pokemon and pivot out of there to a teammate with a good matchup. The +11 speed helps it get a jump on many pokemon such as mew, tying with garchomp, urshifu-r, thundy-t, darm, celebi, and more.
+12 Spe
Makes it a more niche option on sun but still compets with slots on a sun team as heatran is also a good pokemon and they do not want to want to waste time removing hazards as charizard relies a lot at being at full hp to being a threat against offense which its dead weight against with rocks cutting into it
+ Boomburst + 20 Spe
252+ SpA Choice Specs Volcanion Steam Eruption vs. 248 HP / 148 SpD Mew: 256-303 (63.5 - 75.1%) -- guaranteed 2HKO
252+ SpA Choice Specs Refrigerate Aurorus Boomburst vs. 248 HP / 148 SpD Mew: 322-381 (79.9 - 94.5%) -- guaranteed 2HKO
after giving the calcs back a look it is a genuine 2hko monster 2hko'ing even threats such as lefties melm, doing a chunk to offensive heatran, and even 2hko'ing toxapex... it has nul defensive utility compared to volcanion but its very scary esp against bulky builds and
252+ SpA Choice Specs Refrigerate Aurorus Boomburst vs. 0 HP / 4 SpD Heatran: 88-104 (27.2 - 32.1%) -- 75% chance to 3HKO after Stealth Rock
yeah that is a lot of damage and that is a 4x resist.... it seems this will be very fucked vs offense and a pokemon that is amazing against balance teams that can get opportunities to enter via double defog and teleport which can help out the nul def utility it has. SOunds like a good pokemon
+ Ground type + 15 Attack
Bulky diggersby that has access to sucker punch and fake out which allows it to be good against offense but idk how good it is... iguess scrapppy makes it a good pokemon being able to paralyze pokemon trying to switch into eq. Sounds okish.... dont have much to say about it
+ Analytic (Replaces Hydration) + Recover
Bulky analytic attacker... recover sounds nice and analytic makes it have powered draco's which hit really hard.. i mean they actulaly do ... sounds decent and also as a wall with recover