It's an instant cast DoT that is increased by +spell damage so it is really nice now rather than useless. My cycle time between solo pulls is between 22 and 30 seconds depending on positioning so I get the free DoT for > 90% of normal mobs and on longer group fights sometimes twice. The other racial was also improved to reduce melee and ranged damage taken not just ranged. These were a very nice improvement for my NE priest as the previous racials I never used and now I constantly use the 2 new ones. Watch out using starshards as free DPS as a healer as you may not want the extra aggro.