2 piece bonus:
3 piece bonus:
Reduce Arcane Power cost of all skills by 5 (Wizard only)
4 piece bonus:
Increases Health Regeneration by 2000 per second
*Periodically overload on Arcane Power
*Every 3 seconds, you spawn an elemental nova centered on yourself. When this occurs, you hit yourself for 32500 damage as Arcane, and the elemental nova (fire, cold, or arcane) you spawn hits for 32500 damage to everything in its radius (same explosion radius as Frost Nova)
Note the implications of this:
a) Conflagration, Cold Blooded, Temporal Flux can all trigger from the set bonus.
b) At certain HP/Armor/Arcane Resist breakpoints, you can trigger Illusionist once every 3 seconds.
c) In most realistic scenarios, the Health Regeneration bonus > the elemental nova backfire damage, so you get a net gain in regen.