Best Destruction Gear:

Master Destruction Robes/Daedric Armor Of Peereless Destruction.

Daedric/Ebony/Dragon Helmet of Pereless Destruction.

Hands: Ebony/Daedric/Dragon Gauntlets Of Extra Magic +21.

Feet: Ebony/Daedric Boots Of Resist Frost.

Other: Necklace (-10 cost), Ring (-10 cost)

Standing Stones: Atronach Stone (+50 Magicka, absorb 50% spells, Magicka regens at -50%.)

Apprentice Stone: (Magicka regens 2x faster, but twice as vulnerable to spells.) *•But with armor that doesn't really matter!*•