Hundred Blades

Acquisition
Signet of Capture:
 * Prophecies
 * Spoiler-related Boss, see below (Hell's Precipice)
 * Factions
 * Warrior's Construct (Sunjiang District (Mission))
 * Warrior's Construct (Sunjiang District (Explorable))
 * Nightfall
 * Reaper of Agony (Depths of Madness)

Related skills

 * (elite)
 * (elite)

Acquisition
Signet of Capture:
 * Prophecies
 * Undead Prince Rurik (Hell's Precipice)