YES! I love it. But...
Gardevoir needs an item. You can ditch Hypnosis and and have Assault Vest as your item. Or Keep Hypnosis and Have Gardevoirite (If that's how you spell it).
I personally think Aegislash should have no speed EV's. The turn after you use kings shield, you want to be slower than the opponent so when they attack, you still have Defense form.
Hippowdons nature needs to be changed. -Attack is not the way to go if all your moves are Physical. Maybe +Defense -Sp.Attack.
Naganadal is fine, but replace shadow claw for Nature purposes.
Volcorona, don't use that nature. Do anything that Supports it's sp.attack or leaves it alone.
Hope I helped
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