Sign of Power: See All Ends
The Lore-master's Book Legacy Signs of Power Durations increases the duration of the buff that is applied by this skill by up to 30s.
The Lore-master's Imbued Book Legacy Signs of Power Durations and Signs of Power Debuff Rating increases the duration of the debuff that is applied by this skill by up to 35s and adds -3400 rating.
Equipping five pieces of the Raiments of the Spellweaver set adds +5% Incoming Critical Chance to the debuff applied by the skill.
Unlike other Lore-master debuffs, Sign of Power: See All Ends can only be used on one target, reducing its chance to hit critically greatly. It is thus a wise decision to use it on the enemy that you expect to hit hardest. Doing so will reduce the incoming damage of your group over the course of a long fight greatly.
Just like Sign of Power: Command, Sign of Power: See All Ends will not cause an enemy to aggro. You can thus apply it before entering combat. Using it on a stealthed enemy will break it out of stealth, but does not aggro it.