Amber Blade (BfA)

Amber Blades drop from the following mantid in the Vale of Eternal Blossoms during Assaults:
 * Captain Vor'lek
 * Drone Keeper Ak'thet
 * Harbinger Il'koxik
 * Harrier Nir'verash
 * Hive-Guard Naz'ruzek
 * Kal'tik the Blight
 * Klaxxi Amber-Guard
 * Klaxxi Amberseeker
 * Needler Zhesalla
 * Vil'thik Quickblade
 * Vil'thik Swarmkeeper
 * Vil'thik Warrior
 * Zara'thik Hive-Guard
 * Zara'thik Skirmisher
 * Zara'thik Soldier

As a quest objective

 * Blades of Amber