Please rate my Ubers team for Pokemon showdown

Question

Greninja-Ash (M) @ Focus Sash
Ability: Battle Bond
EVs: 4 Atk / 252 SpA / 252 Spe
Hasty Nature
- Water Shuriken
- Ice Beam
- Dark Pulse
- Gunk Shot (for fairy types)

Lycanroc-Dusk (M) @ Lycanium Z
Ability: Tough Claws
Shiny: Yes
Hidden Power: Electric
EVs: 252 Atk / 4 SpA / 252 Spe
Hasty Nature
- Accelerock
- Crunch
- Stone Edge
- Outrage

Charizard-Mega-Y (M) @ Charizardite Y
Ability: Drought
Shiny: Yes
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Defog (for stealth rocks and sticky webs)
- Flare Blitz
- Dragon Claw
- Earthquake

Kartana @ Focus Sash
Ability: Beast Boost
Shiny: Yes
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Leaf Blade
- Smart Strike
- Defog
- Sacred Sword

Marshadow @ Focus Sash
Ability: Technician
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Shadow Sneak
- Spectral Thief
- Drain Punch
- Bulk Up

Zeraora @ Focus Sash
Ability: Volt Absorb
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Plasma Fists
- Iron Tail
- Close Combat
- Outrage

I'm trying to go non legendary because I want to show everyone that legendaries are not everything!

Comments

Why are you using Lycanroc and Zeraora instead of rock Arceus and wash Rotom? If you don't like mythicals, why are you still using Zeraora?

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How you gonna beat P-Groudon

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It's easy to beat p groudon.first weaken it with earthquake Charizard and then kartana handles it with leaf blade

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While it's true that being a legendary doesn't automatically make a pokemon good, nor does having a team full of legendaries automatically make that team good, there aren't a whole lot of non-legendaries that are viable in the Ubers tier, according to Smogon's viability rankings for the tier (https://www.smogon.com/forums/threads/usm-ubers-viability-ranking-thread.3623296/). I'd imagine it would be rather difficult to come up with a solid team without using legendaries. Still, if you want to try, I'd at least consult the viability ranking to look for non-legendary pokemon that can work in the tier. The only pokemon on your team that are on that list are Greninja and Marshadow. Finally, as an aside, I'll say that most offensive pokemon would benefit much more from an item that helps it better utilize its offensive capabilities such as a Choice item, Life Orb, or Z crystal than a Focus Sash. If you're up against something that threatens the pokemon you have in, it's better to just switch to something that can take it on rather than relying on Focus Sash to live the hit.

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Nobody thinks that 'legendaries are everything' -- they think that using the most viable Pokemon helps you win games. You're not going to prove much with this team except that the Pokemon on it are ultimately worse than the best Pokemon in Ubers.