Please rate my Pokemon Showdown UU team

Question

Donphan @ Leftovers
Ability: Sturdy
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
- Rapid Spin
- Earthquake
- Ice Shard
- Knock Off

Though gets killed by many Special Attackers, Donphan is a great wall against Mega Aerodactyl even with Ice Fang.

Minior @ White Herb
Ability: Shields Down
Shiny: Yes
EVs: 252 Atk / 4 SpA / 252 Spe
Lonely Nature
- Shell Smash
- Acrobatics
- Earthquake
- Power Gem

I'm also considering Cloyster Shell Smash White Herb cuz it walls Scizor nicely and does nice damage with Rock Blast though not the best

Sharpedo-Mega @ Sharpedonite
Ability: Speed Boost
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Protect
- Waterfall
- Crunch
- Psychic Fangs

Mega Sharpedo is one of my favorite Mega cleaners or revenge killers and has sweeped many times before.

Togekiss @ Choice Scarf
Ability: Serene Grace
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Air Slash
- Flamethrower
- Defog
- Dazzling Gleam

I LOVE ScarfKiss, though it's kinda disrespectful for using Flinch hax in my opinion, but I still love it as a good Defogger and revenge killer.

Nihilego @ Poisonium Z
Ability: Beast Boost
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Thunderbolt
- Sludge Wave
- Power Gem
- Hidden Power [Ice]

My favorite UB in the UU tier ^-^

Galvantula @ Focus Sash
Ability: Compound Eyes
EVs: 252 SpA / 4 SpD / 252 Spe
Timid Nature
IVs: 0 Atk
- Sticky Web
- Thunder
- Electroweb
- Bug Buzz

A sacrificial lead to make sure Sticky Web is set with awesome damage potential as well.

Comments

Replace Defog on Togekiss with Trick, and replace Electroweb on Galvantula with Volt Switch or Thunder Wave.

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Literally only 2 of your Pokémon are UU. Please read sumwun’s guide on competitive.

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@EvilTwinNeedle, actually, there are three, and any Pokémon that gets access to Sticky Webs has enough of a niche to fit itself into pretty much any tier, so Galvantula's completely viable.

That being said, despite having great stats on paper, Minior is extremely predictable, and can easily be outplayed because of it. I would recommend getting a different set up sweeper, one without Shell Smash, since all the SS users allowed in UU are pretty mediocre (and of them, Minior's already probably the best). I would recommend something with Dragon Dance.
As for Donphan, if you want an Aerodactyl wall, try any bulky pure-water type; Aerodactyl has nothing on them, and then they can retaliate with Scald. Alomomola in particular comes to mind.

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Pokémon being viable and Pokémon being actually IN a tier are totally different. Maybe you should read sumwun’s guide, too.

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Togekiss, M-Sharpedo, and Nihilego are all UU. I was saying Galvantula was also viable in addition to them.