General idea would be to use Diamond skin and Storm armor to reduce AP cost of Comet by 18 (casting Comet every 15 seconds or sooner if you are generating AP like mad).
Passive regeneration from Astral Presence and Familiar w/ Arcanot rune 4 base per second.
Spamming Magic Missile and Spectral Blades between Comet attacks to regen AP, 8 per hit for Magic Missile and variable for Spectral Blades depending on enemy numbers hit.
The Arcane Dynamo will boost the damage of the Comet blasts to around 375% dmg initial and am uncertain if the boost effect the DoT.
Of course this build will suck if facing frost resistant opponents.
EDIT: Possible swaps would be Storm Armor for Time Warp (slow time), and Comet for Energy Twister (what does the Storm Chaser do)?