I really like Regen Mana too, been using this set lately
Manaphy @ Assault Vest
Ability: Regenerator
EVs: 248 HP / 8 SpA / 252 SpD
Sassy Nature
IVs: 0 Spe
- Scald
- Knock Off
- U-turn
- Ice Beam
This thing is just insanely specially bulky, being 4hkoed by Modest LO Moltres' Hurricane, taking 40% from specs Raikou, and taking around 45-50% from Sceptile, meaning that you can U-Turn out, deal around 45% while only taking around 15 net % in damage, and get a free switch in to anything, like a Gale Wings mon.
This however probably my favorite mon in this meta. Basically every time it comes in, something dies.
Typhlosion @ Choice Specs
Ability: Drought
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
- Eruption
- Focus Blast
- Fire Blast
- Solar Beam
Timid may be better, but Modest is nice for the power boost, notably being able to 2hko Chansey with rocks.
252+ SpA Choice Specs Typhlosion Eruption (150 BP) vs. 4 HP / 252 SpD Eviolite Chansey in Harsh Sunshine: 274-324 (42.6 - 50.4%) -- 95.7% chance to 2HKO after Stealth Rock
252+ SpA Choice Specs Typhlosion Eruption (150 BP) vs. 252 HP / 252+ SpD Suicune in Harsh Sunshine: 175-207 (43.3 - 51.2%) -- 58.6% chance to 2HKO after Stealth Rock and Leftovers recovery (No one runs max spdef Suicune)
Although many offensive mons can outspeed and KO, the vast majority cannot both tank a hit and outspeed, and can only revenge kill (Drizzle/Primo Sea beats this though)
252+ SpA Choice Specs Typhlosion Eruption (150 BP) vs. 0 HP / 0 SpD Mega Charizard X in Harsh Sunshine: 153-180 (51.5 - 60.6%) -- guaranteed 2HKO after Stealth Rock (4x resist, Charizard is down with prior damage or if it didn't mega evolve before switching in.)
252+ SpA Choice Specs Typhlosion Eruption (150 BP) vs. 0 HP / 0 SpD Omastar in Harsh Sunshine: 178-210 (63.3 - 74.7%) -- guaranteed 2HKO
252+ SpA Choice Specs Typhlosion Eruption (150 BP) vs. 0 HP / 0 SpD Keldeo in Harsh Sunshine: 292-344 (90.4 - 106.5%) -- 75% chance to OHKO after Stealth Rock
252+ SpA Choice Specs Typhlosion Eruption (150 BP) vs. 252 HP / 0 SpD Moltres in Harsh Sunshine: 306-360 (79.6 - 93.7%) -- guaranteed 2HKO (If Moltres isn't max HP, has a little prior damage, or SR are up, it's down (75% chance of OHKOing 0/0 Moltres)
252+ SpA Choice Specs Typhlosion Eruption (150 BP) vs. 0 HP / 4 SpD Starmie in Harsh Sunshine: 304-358 (117.3 - 138.2%) -- guaranteed OHKO
252+ SpA Choice Specs Typhlosion Eruption (150 BP) vs. 0 HP / 0 SpD Garchomp in Harsh Sunshine: 306-360 (85.7 - 100.8%) -- 50% chance to OHKO after Stealth Rock (Offensive Chomp, Tankchomp is outspeed and 2hkoed)
252+ SpA Choice Specs Typhlosion Eruption (150 BP) vs. 0 HP / 0 SpD Entei in Harsh Sunshine: 339-399 (91.3 - 107.5%) -- guaranteed OHKO after Stealth Rock
252+ SpA Choice Specs Typhlosion Eruption (150 BP) vs. 0 HP / 0 SpD Manaphy in Harsh Sunshine: 267-315 (78.2 - 92.3%) -- 37.5% chance to OHKO after Stealth Rock
Those are all of the resist that are A tier on the VR, mons that dont resist are obviously destroyed by Eruption like
252+ SpA Choice Specs Typhlosion Eruption (150 BP) vs. 0 HP / 0 SpD Hoopa Unbound in Harsh Sunshine: 427-504 (141.8 - 167.4%) -- guaranteed OHKO