Unnatural Signet/Skill history

As of May 21st, 2010

 * New functionality.
 * PvP/PvE-split.

Nightfall release

 * Increased unconditional damage and doubled conditional damage.
 * Doubled recharge. Reduced conditional recharge duration bonus to instant.

1Damage dealt to summoned creatures.

Factions release

 * New functionality.
 * New skill icon.