Suggestions for my OU Rain stall team?

Question

Hai. My first stall team here, and its doing pretty well. So many ragequits :3
I see a couple of flaws and undecided stuff though:

• Big Electric weakness
• Leftovers or Rocky Helmet on Skarmory?
• Blissey or Chansey? And should I run Wish?

Credit to Devil's Advocate for that AMAZING Gastrodon set.

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Politoed (M) @ Leftovers

Trait: Drizzle
EVs: 252 HP / 252 Def / 4 SDef
Bold Nature (+Def, -Atk)

• Scald
• Ice Beam
• Focus Blast
• Perish Song

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Chansey (F) @ Eviolite

Trait: Natural Cure
EVs: 4 HP / 252 Def / 252 SDef
Bold Nature (+Def, -Atk)

• Stealth Rock
• Seismic Toss
• Softboiled / Wish
• Heal Bell

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Skarmory (F) @ Rocky Helmet

Trait: Sturdy
EVs: 252 HP / 232 Def / 24 Spd
Impish Nature (+Def, -SAtk)

• Brave Bird
• Spikes
• Whirlwind
• Roost

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Tentacruel (M) @ Black Sludge

Trait: Rain Dish
EVs: 252 HP / 236 Def / 20 Spd
Bold Nature (+Def, -Atk)

• Scald
• Protect
• Rapid Spin
• Toxic Spikes

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Amoonguss (F) @ Black Sludge

Trait: Regenerator
EVs: 252 HP / 28 SAtk / 228 SDef
Calm Nature (+Def, -Atk)

• Spore
• Clear Smog
• Hidden Power [Ice]
• Giga Drain

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Gastrodon-Ea (Gastrodon-East) (M) @ Leftovers

Trait: Storm Drain
EVs: 252 HP / 112 Def / 144 SAtk
Modest Nature (+SAtk, -Atk)

• Stockpile
• Recover
• Scald
• Earth Power

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Comments

Ok, Amoonguss needs AT LEAST BL2.