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))

Related Skills

 * Attack skills that hit multiple targets
 * Cyclone Axe
 * Triple Chop (Elite)
 * Crude Swing
 * Barrage (Elite)
 * Attacks that hit multiple times
 * Sun and Moon Slash
 * Dual Shot
 * Critical Strike
 * Twisting Fangs
 * Blades of Steel
 * Exhausting Assault
 * Horns of the Ox
 * Nine Tail Strike
 * Death Blossom

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