My original build had Major magika recovery however after awhile i noticed a dip in DPS after i reached level 50
This build can be used in PvP however you would be considered a glass cannon

Primary weapon - Julianos Ice staff
Secondary weapon - Julianos lightning staff /or/ WMA varient (personally i go with Juli to keep the bonus

4 Light Julianos pieces
1 Heavy MKP Shoulders (from undaunted dailies, the one with the single spell damage bonus)
2 Light pieces from Scathing mage (Imperial Prison set)
2 Rings from Scathing Mage
1 Amulet from Scathing Mage (probably the hardest to get since it only drops from last boss)

All pieces have Divine (becuase sure why not.....)

Scathing mage is chosen for the damage output over Burning SpellWeave becuase the reset time on BSW is 12 seconds whereas its 6 seconds on Scathing, leading to a more consistant damage output over a burst style of damage, HOWEVER, Replacing Scathing Mage pieces with BSW pieces will lead to a larger damage range and overall bigger damage numbers, i personally choose Scathing for the larger lower end numbers leading to a smaller and quicker damage pool

I understand that alot of players would choose the burst damage and overall higher damage numbers for the longer fight but i personaly play it safe, quick and easy, smaller damage range with a quick pace and alot of quick crits

*EDIT*

Im very very sorry, i put the wrong ability in tab 1 slot 3, its not suppose to be Structured Entropy, its suppose to be Elemental Susceptibility

Also the enchant that i didnt talk about, both rings are spell damage, amulet is Reduce mag cost, armor is mag (like always) weapons can be whatever you wish, i personal choose magic damage returning magicka but thats up to u