Solarsliver
"In game description" wrote:
Channels the power of the dawn to strike your target for 2815 damage. While channeling this power you will sometimes gain the blessing of the dawn, which will greatly increase your next direct damage spell. However, there is also a small chance that the energy will backfire and cause your next several direct damage spells to do less damage.
This spell has two possible recourse's, the second is called Shadow of Dawn. Like the description says, this is much rarer than the Blessing, but is still annoying when it happens.