Quivering Blade

Acquisition
Signet of Capture:
 * Sun, the Quivering (Wajjun Bazaar)

Note: if you're friendly with the Am Fah (by doing the Bujo quests in Kaineng), Sun is not hostile towards you. You must complete all of Bujo's quests to then get Monstrous Revelation from Imperial Agent Hanjo in Kaineng Center. While doing this quest, Sun will spawn. Everyone in your party must have completed all of Bujo's quests for him to spawn during Monstrous Revelation.

Usage Notes
This skill is very effective in dealing large amounts of damage to a foe with little adrenaline consumed. Combine with Warrior's Cunning or the Necromancer skill Rigor Mortis to prevent it from being blocked. Use fast attacks skills such as Frenzy, Flurry, "I Will Avenge You!", Tiger Stance or the ranger skill Tiger's Fury to attack faster and thus charge up arenaline faster. If your only goal is to attack faster to charge up Quivering Blade, then Flurry's downside may not be that damaging, but could lower your DPS all the same.

Other tactics include adrenaline spikes, such as "For Great Justice!" and "To the Limit!".

Of course, using Quivering Blade while you know there is a strong possibility it will be blocked, then using Plague Touch creates a win-win scenario - you either deal extra damage, or daze your target.