Trying to improve my Mega Blastoise team

[MrWahoo]

I've tried researching so much on this game and just trying to a have competent team. I figure I build one around Blastoise since he's my favorite Pokemon, but, f***, I feel like a loser. I haven't won a game yet in the doubles rating battles this season. I'll share what I have and hopefully someone here can help me make some proper adjustments. Please help.

Blastoise-Mega @ Blastoisinite
Ability: Mega Launcher
EVs: 6 HP / 252 SpA / 252 Spe
Modest Nature
- Water Spout
- Ice Beam
- Aura Sphere
- Protect

Amoonguss @ Rocky Helmet
Ability: Effect Spore
EVs: 252 HP / 252 Def / 4 SpA
Relaxed Nature
- Giga Drain
- Rage Powder
- Spore
- Protect

Sylveon @ Choice Specs
Ability: Pixilate
EVs: 188 HP / 68 Def / 252 SpA
Modest Nature
- Hyper Voice
- Shadow Ball
- Psyshock
- Protect

Garchomp @ Focus Sash
Ability: Rough Skin
EVs: 252 Atk / 4 SpD / 252 Spe
Jolly Nature
- Dragon Claw
- Earthquake
- Rock Slide
- Protect

Talonflame @ Life Orb
Ability: Gale Wings
EVs: 4 HP / 252 Atk / 252 Spe
Adamant Nature
- Brave Bird
- Flare Blitz
- Will-O-Wisp
- Tailwind

Aegislash @ Weakness Policy
Ability: Stance Change
EVs: 252 HP / 100 SpA / 156 SpD
Quiet Nature
- Flash Cannon
- Shadow Ball
- King's Shield
- Wide Guard

 

[Nah]

Protect doesn't work with Choice Specs on Sylveon since Choice items lock Pokemon into one move and you don't want to be stuck with only Protect til it switches out. Hidden Power Fire or Ground would be better to snipe Steel types with.

Life Orb is a bad idea on Talonflame due to how frail it is, how common Rock Slide is, and the fact that its attacks cause recoil damage. It'll be dying real fast, even if you had Roost on it. Maybe like a Sharp Beak or a Flame Plate or a Lum Berry or something would be better.

Water Spout is indeed powerful and has the bonus of not hitting your allies like Surf does, but it loses power as Blastoise loses HP so it's not what I'd call reliable. Water Pulse or Hydro Pump would probably be better, despite being single target only.

I also feel like Garchomp could maybe be replaced with something else, but I'm not sure what really....

 

[PlatinumDude]

Protect doesn't work with Choice Specs on Sylveon since Choice items lock Pokemon into one move and you don't want to be stuck with only Protect til it switches out. Hidden Power Fire or Ground would be better to snipe Steel types with.

Life Orb is a bad idea on Talonflame due to how frail it is, how common Rock Slide is, and the fact that its attacks cause recoil damage. It'll be dying real fast, even if you had Roost on it. Maybe like a Sharp Beak or a Flame Plate or a Lum Berry or something would be better.

Water Spout is indeed powerful and has the bonus of not hitting your allies like Surf does, but it loses power as Blastoise loses HP so it's not what I'd call reliable. Water Pulse or Hydro Pump would probably be better, despite being single target only.

I also feel like Garchomp could maybe be replaced with something else, but I'm not sure what really....

Water Spout is indeed a viable option on Mega Blastoise, especially when backed by Tailwind support (which Talonflame provides). Amoonguss can also redirect single-target attacks with Rage Powder.

To provide some more speed control, you can have something like Klefki provide Thunder Wave to slow down opponents:
-Reflect
-Light Screen
-Thunder Wave
-Foul Play
Nature: Bold
EVs: 252 HP/64 Def/192 SDef
Item: Light Clay
Ability: Prankster