[ORAS] Team Tweaks?

[Marcusube]

Charizard-Mega-Y @ Charizardite Y
Ability: Drought
Level: 50
EVs: 214 HP / 4 Def / 252 SpA / 4 SpD / 36 Spe
Modest Nature
IVs: 0 Atk
- Protect
- Heat Wave
- Solar Beam
- Roost

Umbreon @ Leftovers
Ability: Synchronize
Level: 50
EVs: 192 HP / 160 Def / 156 SpD
Careful Nature
- Toxic
- Foul Play
- Moonlight
- Detect

Conkeldurr @ Lum Berry
Ability: Iron Fist
Level: 50
EVs: 204 HP / 172 Atk / 132 Def
Adamant Nature
- Protect
- Drain Punch
- Ice Punch
- Wide Guard

Clefable @ Sitrus Berry
Ability: Magic Guard
Level: 50
EVs: 252 HP / 180 Def / 76 SpD
Bold Nature
IVs: 0 Atk
- Follow Me
- Moonlight
- Moonblast
- Thunder Wave

Whimsicott @ Focus Sash
Ability: Prankster
Level: 50
EVs: 252 HP / 4 Def / 252 SpD
Calm Nature
- Encore
- Protect
- Tailwind
- Charm

Aegislash @ Weakness Policy
Ability: Stance Change
Level: 50
EVs: 156 HP / 96 Atk / 116 Def / 140 SpD
Adamant Nature
- King's Shield
- Shadow Sneak
- Sacred Sword
- Substitute

Now I changed a few members of your team. Reason being because they are way too fragile and they aren't very hard hitters in that they don't guarantee a kill but they die in one hit. I made a few adjustments to your team to take advantage of the sun with the move Moonlight to give more bulk to the walls that may take the most hits. I changed Charizard's EV spread to one where it can endure more hits. It is meant to be used with Whimsicott's Tailwind so that you can be a bit tanky while at the same time being a very powerful sweeper.

I'm not sure how you feel about these suggestions but please respond.