Patch 2.3.0 (13-Nov-2007): Starshards is no longer channeled, costs 0 mana, is now a Magic effect, lasts 15 seconds, causes damage every 3 seconds and has a 30 second cooldown. The damage per tick of this ability no longer changes during the duration of the effect.
Patch 1.4.0 (2005-05-05): Should now be affected by the Focused Casting, Force of Will, and Silent Resolve talents.