Hi everyone. Diancie is one of my favorite Pokemon along with Celebi, so I naturally wanted to build a team based on those two cuties. I'm looking for a team with which I can ladder relatively reliably and play consistently, so I'd really appreciate any help you guys are willing to give to improve this team! Credits to SnowCristal for making a great team based on the same idea, which helped me think.
The Team
Landorus-Therian @ Leftovers
Ability: Intimidate
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
- Stealth Rock
- Earthquake
- Stone Edge
- U-turn
Standard Landorus-T, and 1/4th of the VoltTurners. I need him to help me take care of opposing Landorus-T, Excadrill, Mega Charizard-X, and so on. Basically, he's the physical wall of my team. I considered putting Hippowdon in this spot instead, but Landorus-T is really helpful in wearing down Pokemon like Rotom-W with U-turn. Hippowdon's Slack Off would be really appreciated though, because I noticed that this team has a lot of trouble with Mega Manectric, which can slowly weaken my team if used well.
Scizor (M) @ Leftovers
Ability: Technician
EVs: 224 HP / 20 Atk / 252 SpD / 12 Spe
Careful Nature
- U-turn
- Bullet Punch
- Defog
- Roost
I borrowed the idea of this set from SnowCristal, but I replaced Knock Off with U-turn so that he could contribute to the VoltTurning, and I don't regret it. I use him to help me deal with threats like Gengar and Gardevoir, Defog the opponent's SR, and wear down the opponent's team with U-turn. I do wish he was a little bulkier though, because he does too many jobs at once. Defog is most important to make it easier for Landorus-T and Raikou to keep their VoltTurn chains going, because SR will eventually kill them both.
Raikou @ Assault Vest
Ability: Pressure
EVs: 252 SpA / 32 SpD / 224 Spe
Timid Nature
- Thunderbolt
- Extrasensory
- Hidden Power [Ice]
- Volt Switch
AV Raikou is so awesome! He barely takes any damage from special attacks thanks to the Assault Vest, which helps me deal with Gengar, Tornadus-T and Thundurus. He also has great coverage and speed, which makes him an excellent candidate to pass Nasty Plot to when it's not safe to do so for Keldeo and Diancie. His Assault Vest and natural bulk make him really hard for the opponent to take down once he has +2 SpA. The only problem is that I wish he had some way of healing, because SR can wear him down a lot if I don't get the chance to use Defog.
Celebi @ Leftovers
Ability: Natural Cure
EVs: 240 HP / 136 Def / 96 SpD / 36 Spe
Bold Nature
IVs: 0 Atk
- Nasty Plot
- Giga Drain
- Baton Pass
- Recover
Celebi is obviously the heart of this team, since she supports 3 of my special sweepers with Nasty Plot boosts. Diancie in particular becomes almost impossible to stop (unless the opponent has a Scizor) once she has +2 SpA and speed. But Raikou and Keldeo appreciate the boost as well. Celebi has a few main threats which opponents who face this team like to switch in: Heatran, Talonflame, Gengar, Bisharp and so on. Between Raikou, Keldeo and Diancie, I have an answer to all of these threats, and sometimes, I can even risk taking a hit these Pokemon just to pass NP and sweep. But Celebi isn't good just for passing NP and keeping the VoltTurn chain going; I also need him to help me take out Pokemon like Azumarill, Rotom-W and Mega Lopunny, who otherwise would embarrass this team.
Keldeo @ Leftovers
Ability: Justified
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Calm Mind
- Scald
- Secret Sword
- Substitute
Keldeo may be the MVP of this team. He's very easy to bring in thanks to the team using VoltTurn moves constantly, and he's almost always threatening. Sometimes, I can predict that the opponent will switch, so I use Substitute. Sometimes, I gradually weaken an opposing Latios/Latias with Scald so I can burn them and open the way for a sweep. Sometimes, I can just outright sweep the opponent's team after a NP boost. He's a really fantastic Pokemon and more evidence can be seen in the battle I'll post at the end of this thread.
Diancie @ Diancite
Ability: Clear Body
EVs: 40 Atk / 252 SpA / 216 Spe
Naive Nature
- Rock Polish
- Moonblast
- Diamond Storm
- Hidden Power [Fire]
Diancie is so cute, but looks can be deceiving. After a Rock Polish and a NP, she can take on and defeat just about the entire metagame, apart from Scizor, Azumarill and the like. Sometimes when I feel like I need Diancie to be more durable, I'll use Rock Polish without evolving her so that I can take a hit better. And when I can kill something with Diamond Storm, I have around a 50% chance (slightly less due to 95 accuracy) of getting +1 Def to be able to take physical attacks better. To give you an idea of how useful this is, Diancie can take an Earthquake from physically defensive Landorus-T after getting +1 Def (the chance to survive an Earthquake from Scarf Landorus-T is not so great). This has come in handy in the past, when I needed Mega Diancie to survive Fake Outs from Mega Lopunny so that she could sweep. I kept using Diamond Storm and got the +1 Defs needed to sweep the opponent's team. She can also kill Pokemon like Scizor and Ferrothorn on the switch sometimes in one hit. Awesome sweeper.
Threats
Really annoying for this team to face, especially if it has HP Fire. It can wear down Raikou (who has Extrasensory solely to take on Mega Venusaur) with Sludge Bombs, which may poison him, and I'll have no counter left for it. In that case, I'll have to pray that Celebi can get a NP on him and Pass to Raikou or something.
Depending on its set, if it gets a DD I can't do anything to it. If it has both Crunch and Earthquake, it sweeps my team. I can try to play around it with Landorus-T, Celebi and Raikou. Keldeo can take a hit and hurt it with Secret Sword.
Can slowly wear down my team with constant HP Ices, Overheats, Volt Absorbs etc. Raikou can't take it on forever. Having SR on the field would be great though.
Walks all over my team after getting +2 SpA if it's not weakened. Fortunately though, most of my team can weaken it enough so that I can kill it with Scizor: Landorus-T can U-turn, Scizor can take an unboosted HP Fire and U-turn it, Raikou can HP Ice it, Celebi can set up NP and Pass to Raikou who can take a hit and kill it.
Concluding Remarks
This is a really fun team to play with, and it definitely can succeed in the ladder. It does have some significant issues which I can solve with the help of you guys. I'd really appreciate your help!
Example Battles (to be updated)
http://replay.pokemonshowdown.com/ou-238171203
Team-Building Process
We started off with this cutie and major threat. Diancie is even more threatening with a NP pass from Celebi, though:
I still had no way of dealing with Bisharp, who is basically the biggest threat to this duo. Keldeo was an obvious choice since he's an amazing sweeper with help from Celebi and basically the best pffensive Bisharp check there is:
Now is when it starts to get interesting, and I no longer have obvious choices to choose from. I needed something that could take attacks from Pokemon like Gengar, Gardevoir, Thundurus etc. more reliably while also appreciating a Nasty Plot boost from Celebi. AV Raikou seemed like the most natural choice, since he has great speed and he can kick a lot of ass with a NP boost from Celebi. It's also good for me if I have more options to pass NP to.
Now, just about every team needs a steel type to deal with fairies and such. I also needed something to also take more attacks from Pokemon like Gengar and Gardevoir. I saw on SnowCristal's thread that he had a team based on Celebi+Keldeo+Diancie as well, and he used Defog SDef Scizor for this task.
This team already had 3 VoltTurn users (including BP Celebi), and I needed a physical wall U-turn SR user. The obvious choice was Landorus-T.

We started off with this cutie and major threat. Diancie is even more threatening with a NP pass from Celebi, though:


I still had no way of dealing with Bisharp, who is basically the biggest threat to this duo. Keldeo was an obvious choice since he's an amazing sweeper with help from Celebi and basically the best pffensive Bisharp check there is:



Now is when it starts to get interesting, and I no longer have obvious choices to choose from. I needed something that could take attacks from Pokemon like Gengar, Gardevoir, Thundurus etc. more reliably while also appreciating a Nasty Plot boost from Celebi. AV Raikou seemed like the most natural choice, since he has great speed and he can kick a lot of ass with a NP boost from Celebi. It's also good for me if I have more options to pass NP to.




Now, just about every team needs a steel type to deal with fairies and such. I also needed something to also take more attacks from Pokemon like Gengar and Gardevoir. I saw on SnowCristal's thread that he had a team based on Celebi+Keldeo+Diancie as well, and he used Defog SDef Scizor for this task.





This team already had 3 VoltTurn users (including BP Celebi), and I needed a physical wall U-turn SR user. The obvious choice was Landorus-T.






The Team

Landorus-Therian @ Leftovers
Ability: Intimidate
EVs: 252 HP / 4 Atk / 252 Def
Impish Nature
- Stealth Rock
- Earthquake
- Stone Edge
- U-turn
Standard Landorus-T, and 1/4th of the VoltTurners. I need him to help me take care of opposing Landorus-T, Excadrill, Mega Charizard-X, and so on. Basically, he's the physical wall of my team. I considered putting Hippowdon in this spot instead, but Landorus-T is really helpful in wearing down Pokemon like Rotom-W with U-turn. Hippowdon's Slack Off would be really appreciated though, because I noticed that this team has a lot of trouble with Mega Manectric, which can slowly weaken my team if used well.

Scizor (M) @ Leftovers
Ability: Technician
EVs: 224 HP / 20 Atk / 252 SpD / 12 Spe
Careful Nature
- U-turn
- Bullet Punch
- Defog
- Roost
I borrowed the idea of this set from SnowCristal, but I replaced Knock Off with U-turn so that he could contribute to the VoltTurning, and I don't regret it. I use him to help me deal with threats like Gengar and Gardevoir, Defog the opponent's SR, and wear down the opponent's team with U-turn. I do wish he was a little bulkier though, because he does too many jobs at once. Defog is most important to make it easier for Landorus-T and Raikou to keep their VoltTurn chains going, because SR will eventually kill them both.

Raikou @ Assault Vest
Ability: Pressure
EVs: 252 SpA / 32 SpD / 224 Spe
Timid Nature
- Thunderbolt
- Extrasensory
- Hidden Power [Ice]
- Volt Switch
AV Raikou is so awesome! He barely takes any damage from special attacks thanks to the Assault Vest, which helps me deal with Gengar, Tornadus-T and Thundurus. He also has great coverage and speed, which makes him an excellent candidate to pass Nasty Plot to when it's not safe to do so for Keldeo and Diancie. His Assault Vest and natural bulk make him really hard for the opponent to take down once he has +2 SpA. The only problem is that I wish he had some way of healing, because SR can wear him down a lot if I don't get the chance to use Defog.

Celebi @ Leftovers
Ability: Natural Cure
EVs: 240 HP / 136 Def / 96 SpD / 36 Spe
Bold Nature
IVs: 0 Atk
- Nasty Plot
- Giga Drain
- Baton Pass
- Recover
Celebi is obviously the heart of this team, since she supports 3 of my special sweepers with Nasty Plot boosts. Diancie in particular becomes almost impossible to stop (unless the opponent has a Scizor) once she has +2 SpA and speed. But Raikou and Keldeo appreciate the boost as well. Celebi has a few main threats which opponents who face this team like to switch in: Heatran, Talonflame, Gengar, Bisharp and so on. Between Raikou, Keldeo and Diancie, I have an answer to all of these threats, and sometimes, I can even risk taking a hit these Pokemon just to pass NP and sweep. But Celebi isn't good just for passing NP and keeping the VoltTurn chain going; I also need him to help me take out Pokemon like Azumarill, Rotom-W and Mega Lopunny, who otherwise would embarrass this team.

Keldeo @ Leftovers
Ability: Justified
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Calm Mind
- Scald
- Secret Sword
- Substitute
Keldeo may be the MVP of this team. He's very easy to bring in thanks to the team using VoltTurn moves constantly, and he's almost always threatening. Sometimes, I can predict that the opponent will switch, so I use Substitute. Sometimes, I gradually weaken an opposing Latios/Latias with Scald so I can burn them and open the way for a sweep. Sometimes, I can just outright sweep the opponent's team after a NP boost. He's a really fantastic Pokemon and more evidence can be seen in the battle I'll post at the end of this thread.

Diancie @ Diancite
Ability: Clear Body
EVs: 40 Atk / 252 SpA / 216 Spe
Naive Nature
- Rock Polish
- Moonblast
- Diamond Storm
- Hidden Power [Fire]
Diancie is so cute, but looks can be deceiving. After a Rock Polish and a NP, she can take on and defeat just about the entire metagame, apart from Scizor, Azumarill and the like. Sometimes when I feel like I need Diancie to be more durable, I'll use Rock Polish without evolving her so that I can take a hit better. And when I can kill something with Diamond Storm, I have around a 50% chance (slightly less due to 95 accuracy) of getting +1 Def to be able to take physical attacks better. To give you an idea of how useful this is, Diancie can take an Earthquake from physically defensive Landorus-T after getting +1 Def (the chance to survive an Earthquake from Scarf Landorus-T is not so great). This has come in handy in the past, when I needed Mega Diancie to survive Fake Outs from Mega Lopunny so that she could sweep. I kept using Diamond Storm and got the +1 Defs needed to sweep the opponent's team. She can also kill Pokemon like Scizor and Ferrothorn on the switch sometimes in one hit. Awesome sweeper.
Threats

Really annoying for this team to face, especially if it has HP Fire. It can wear down Raikou (who has Extrasensory solely to take on Mega Venusaur) with Sludge Bombs, which may poison him, and I'll have no counter left for it. In that case, I'll have to pray that Celebi can get a NP on him and Pass to Raikou or something.

Depending on its set, if it gets a DD I can't do anything to it. If it has both Crunch and Earthquake, it sweeps my team. I can try to play around it with Landorus-T, Celebi and Raikou. Keldeo can take a hit and hurt it with Secret Sword.

Can slowly wear down my team with constant HP Ices, Overheats, Volt Absorbs etc. Raikou can't take it on forever. Having SR on the field would be great though.

Walks all over my team after getting +2 SpA if it's not weakened. Fortunately though, most of my team can weaken it enough so that I can kill it with Scizor: Landorus-T can U-turn, Scizor can take an unboosted HP Fire and U-turn it, Raikou can HP Ice it, Celebi can set up NP and Pass to Raikou who can take a hit and kill it.
Concluding Remarks
This is a really fun team to play with, and it definitely can succeed in the ladder. It does have some significant issues which I can solve with the help of you guys. I'd really appreciate your help!
Example Battles (to be updated)
http://replay.pokemonshowdown.com/ou-238171203