





Introduction
I've been using this team for a while now and have been moving up and down on the ladder, but on good days, it stays around the 1600s. That might not seem that impressive, but it's the highest I've ever laddered, so I'm cool with it. (It got higher than 1620 a couple of months ago, but I can't remember the rank, it still didn't past 1700, and the meta is a bit different now, so I wanted to include a more current ranking). That said, if I can edit this team to make it more effective, why not do so?
Teambuilding Process

My friend wanted help building a team for a battle against one of his friends. He wanted a team with a bunch of set-up sweepers as well as Psychium-Z Volcarona, so Volcarona was the first Pokémon on the team.


After watching this video, we both wanted to give Fightinium-Z Tapu Bulu a try. We added Tapu Bulu and gave Volcarona Leftovers.



I wanted a Water-type to form a FWG core with Volcarona and Tapu Bulu, so I added Mega Blastoise to spin away hazards for Volcarona and to break walls for the set-up sweepers.




Zygarde is one of the best Pokémon in the tier with the very spammable Thousand Arrows, so I added it to the team next.





I wanted another answer to threats like Toxapex and Mega Venusaur, so I thought NP Azelf would do the trick. I figured it could also function as my Stealth Rock setter.






I wanted something immediately fast that could cover a lot of standard threats, so I brought in Scarf Nihilego to deal with those.
The Team

Volcarona @ Leftovers
Ability: Flame Body
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
IVs: 0 Atk
- Quiver Dance
- Fiery Dance
- Giga Drain
- Hidden Power [Ice]
+1 252 SpA Volcarona Giga Drain vs. 248 HP / 0 SpD Tapu Fini: 202-238 (58.8 - 69.3%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery
+1 252 SpA Volcarona Giga Drain vs. 0 HP / 4 SpD Keldeo: 274-324 (84.8 - 100.3%) -- 43.8% chance to OHKO after Stealth Rock
+1 252 SpA Volcarona Giga Drain vs. 0 HP / 4 SpD Keldeo: 274-324 (84.8 - 100.3%) -- 43.8% chance to OHKO after Stealth Rock

Tapu Bulu @ Fightinium Z
Ability: Grassy Surge
EVs: 248 HP / 252 Atk / 8 SpD
Adamant Nature
- Horn Leech
- Superpower
- Swords Dance
- Substitute
+2 252+ Atk Tapu Bulu All-Out Pummeling (190 BP) vs. 252 HP / 4 Def Tangrowth: 374-440 (92.5 - 108.9%) -- guaranteed OHKO after Stealth Rock
+2 252+ Atk Tapu Bulu All-Out Pummeling (190 BP) vs. 248 HP / 252+ Def Skarmory: 258-304 (77.4 - 91.2%) -- 25% chance to OHKO after Stealth Rock
+2 252+ Atk Tapu Bulu All-Out Pummeling (190 BP) vs. 248 HP / 252+ Def Skarmory: 258-304 (77.4 - 91.2%) -- 25% chance to OHKO after Stealth Rock

Blastoise @ Blastoisinite
Ability: Torrent
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
IVs: 0 Atk
- Rapid Spin
- Scald
- Dark Pulse
- Aura Sphere
252+ SpA Mega Launcher Blastoise-Mega Dark Pulse vs. 240 HP / 140 SpD Mew: 258-304 (64.3 - 75.8%) -- guaranteed 2HKO after Leftovers recovery
252+ SpA Mega Launcher Blastoise-Mega Dark Pulse vs. 0 HP / 0 SpD Latios: 272-322 (90.3 - 106.9%) -- 43.8% chance to OHKO
252+ SpA Mega Launcher Blastoise-Mega Aura Sphere vs. 248 HP / 8 SpD Eviolite Chansey: 188-222 (26.7 - 31.5%) -- guaranteed 4HKO
252+ SpA Mega Launcher Blastoise-Mega Dark Pulse vs. 0 HP / 0 SpD Latios: 272-322 (90.3 - 106.9%) -- 43.8% chance to OHKO
252+ SpA Mega Launcher Blastoise-Mega Aura Sphere vs. 248 HP / 8 SpD Eviolite Chansey: 188-222 (26.7 - 31.5%) -- guaranteed 4HKO

Zygarde @ Leftovers
Ability: Aura Break
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Dragon Dance
- Thousand Arrows
- Outrage
- Extreme Speed
252+ Atk Zygarde Thousand Arrows vs. 92 HP / 0 Def Mawile-Mega: 222-264 (84 - 100%) -- 37.5% chance to OHKO after Stealth Rock
+1 252+ Atk Zygarde Thousand Arrows vs. 92 HP / 0 Def Mawile-Mega: 336-396 (127.2 - 150%) -- guaranteed OHKO
+1 252+ Atk Zygarde Thousand Arrows vs. 248 HP / 0 Def Magearna: 356-422 (98 - 116.2%) -- guaranteed OHKO after Stealth Rock
252+ Atk Zygarde Extreme Speed vs. 0 HP / 4 Def Greninja-Ash: 110-130 (38.5 - 45.6%) -- 14.1% chance to 2HKO after Stealth Rock
252+ Atk Zygarde Extreme Speed vs. 0 HP / 4 Def Lopunny-Mega: 84-99 (30.9 - 36.5%) -- 99.8% chance to 3HKO after Stealth Rock
252+ Atk Zygarde Extreme Speed vs. 0 HP / 4 Def Alakazam-Mega: 113-133 (45 - 52.9%) -- guaranteed 2HKO after Stealth Rock
+1 252+ Atk Zygarde Thousand Arrows vs. 92 HP / 0 Def Mawile-Mega: 336-396 (127.2 - 150%) -- guaranteed OHKO
+1 252+ Atk Zygarde Thousand Arrows vs. 248 HP / 0 Def Magearna: 356-422 (98 - 116.2%) -- guaranteed OHKO after Stealth Rock
252+ Atk Zygarde Extreme Speed vs. 0 HP / 4 Def Greninja-Ash: 110-130 (38.5 - 45.6%) -- 14.1% chance to 2HKO after Stealth Rock
252+ Atk Zygarde Extreme Speed vs. 0 HP / 4 Def Lopunny-Mega: 84-99 (30.9 - 36.5%) -- 99.8% chance to 3HKO after Stealth Rock
252+ Atk Zygarde Extreme Speed vs. 0 HP / 4 Def Alakazam-Mega: 113-133 (45 - 52.9%) -- guaranteed 2HKO after Stealth Rock

Azelf @ Focus Sash
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
-
- Psyshock
- Fire Blast
- Stealth Rock
Edit: Changed Nasty Plot for Taunt to deal with opposing leads. Thanks MysticPeanuts!

Nihilego @ Choice Scarf
Ability: Beast Boost
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Sludge Wave
- Power Gem
- Thunderbolt
- Hidden Power [Ice]
252 SpA Nihilego Sludge Wave vs. 248 HP / 0 SpD Tapu Fini: 246-290 (71.7 - 84.5%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery
Conclusion
I like this team, but between initial problems and a changing meta, it needs some updates. Here are the things I'm most concerned about:
- Nihilego was way more effective when I first built this team because scarf Nihilego was uncommon, so it could land surprise kills on things like Landorus-T, and Tapu Lele. Now, people expect it, so they know to switch out right away. The rise of scarf Greninja and Tapu Koko didn't do it any favors either.
- Despite having a lot of set-up mons, this team struggles a bit with stall, especially with Clefable, Zapdos, and Mega Sableye. Part of that might just be my own inability to play around stall.
- Heatran, Mega Lopunny, and Mega Medicham kind of give this team a hard time as well.
Volcarona @ Leftovers
Ability: Flame Body
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
IVs: 0 Atk
- Fiery Dance
- Quiver Dance
- Giga Drain
- Hidden Power [Ice]
Tapu Bulu @ Fightinium Z
Ability: Grassy Surge
EVs: 248 HP / 252 Atk / 8 SpD
Adamant Nature
- Horn Leech
- Superpower
- Swords Dance
- Substitute
Blastoise @ Blastoisinite
Ability: Torrent
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
IVs: 0 Atk
- Rapid Spin
- Scald
- Dark Pulse
- Aura Sphere
Zygarde @ Leftovers
Ability: Aura Break
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Dragon Dance
- Thousand Arrows
- Outrage
- Extreme Speed
Azelf @ Focus Sash
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Taunt
- Psyshock
- Fire Blast
- Stealth Rock
Nihilego @ Choice Scarf
Ability: Beast Boost
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Sludge Wave
- Power Gem
- Thunderbolt
- Hidden Power [Ice]
Ability: Flame Body
EVs: 252 SpA / 4 SpD / 252 Spe
Modest Nature
IVs: 0 Atk
- Fiery Dance
- Quiver Dance
- Giga Drain
- Hidden Power [Ice]
Tapu Bulu @ Fightinium Z
Ability: Grassy Surge
EVs: 248 HP / 252 Atk / 8 SpD
Adamant Nature
- Horn Leech
- Superpower
- Swords Dance
- Substitute
Blastoise @ Blastoisinite
Ability: Torrent
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
IVs: 0 Atk
- Rapid Spin
- Scald
- Dark Pulse
- Aura Sphere
Zygarde @ Leftovers
Ability: Aura Break
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Dragon Dance
- Thousand Arrows
- Outrage
- Extreme Speed
Azelf @ Focus Sash
Ability: Levitate
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Taunt
- Psyshock
- Fire Blast
- Stealth Rock
Nihilego @ Choice Scarf
Ability: Beast Boost
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Sludge Wave
- Power Gem
- Thunderbolt
- Hidden Power [Ice]
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