Unstable Seal of Completion

is a gift to all players during Bonus Catalyst/ Augment Catalysts Weekends, which can be used in the process of upgrading artifacts at any breakthrough level.

Obtained from

 * Grant

Trivia

 * The text when claiming this item read: Maximize the potential of your bonus Catalysts with this Unstable Seal of Completion. Note: this seal is unstable and has begun to decay. Be sure to use it before it expires!
 * Artifact breakthroughs have a lower breakthrough chance the higher the artifact level, as low as 3% at level 200. 3% meaning that merely three out of hundred breakthrough attempts would be successful on average. Thus this item can speed up breakthroughs at levels 140 to 200 considerably.