Please rate my Gen 5 3v3 Team

Question

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Lv. 100 Ferrothorn @ Rocky Helmet
Ability: Iron Barbs
EVs: 252 HP / 252 Atk / 0 Sp Atk / 6 Def / 0 Sp Def / 0 Spd
Nature: Brave

Moves:
- Gyro Ball (speed disadvantage maximizes damage)
- Spikes (triple-use provides 1/4 HP loss entry hazard)
- Leech Seed (replenishes HP - also an entry hazard)
- Earthquake (strong physical attack that deals 1x damage to fire and fighting types - just in case)
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Lv. 100 Emboar @ Life Orb
Ability: Reckless
EVs: 252 HP / 252 Atk / 0 Sp Atk/ 6 Def / 0 Sp Def / 0 Spd
Nature: Adamant

Moves:
- Flare Blitz (STAB + Reckless boosted)
- Wild Charge (for use against Water and Flying types, Reckless boosted)
- Hammer Arm (STAB + Reckless boosted)
- Heat Crash (Emboar is quite heavy)
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Lv. 100 Mewtwo @ Leftovers
Ability: Pressure
EVs: 90 HP / 0 Atk / 252 Sp Atk / 84 Def / 84 Sp Def / 0 Spd
Nature: Modest

Moves:
- Psystrike
- Aura Sphere
- Ice Beam
- Shadow Ball

All moves get Sp Atk boost.
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How are my EVs and natures? This is the first time I'm actually paying attention to those and trying to give my Pokémon a nature that's beneficial to my EVs and strategy. Any other suggestions?

Comments

What Pokemon, moves, or abilities are you allowed to use?

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Each player is limited to one legendary Pokémon. No mythical Pokémon are allowed. No moves and abilities are disallowed. My opponent is only going to use Unova Pokémon with the exception of Pikachu and any Gen 1-4 Pokémon found in the wild in Pokémon White.

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Why are you using Emboar instead of Conkeldurr?

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I saw a kamikaze strategy a while back that decimated the opposition, and decided to make my own version. I'm open to suggestions for improvements to my team, but that's just my current strategy.

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WHy 31 spe IVS on Ferro

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How do you get an analytic Mewtwo? I think Blaziken is better than Emboar. Speed boost lets Blaziken outspeed almost anything, and it's much stronger after one swords dance.

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The analytic ability was a typo. My device creates some pretty strange ones sometimes. And even with my basic knowledge of EVs, I'm still mostly clueless about them. Any suggestions are appreciated.

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Do you think Emboar is better than Blaziken?

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I don't have an opinion on whether one's better than the other, but if one of them is a better choice for my competitive team, I'd be open to suggestions on how to use it.

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Use this set. I'm almost certain it's better than Emboar.
Blaziken @ leftovers
Ability: speed boost
EVs: 252 Atk / 4 Def / 252 Spe
Jolly nature
- protect
- flare blitz
- high jump kick
- swords dance