Images:

archeage-midnight-mist-swordarcheage-midnight-mist-obsidian-sword

Where to Obtain:

T5 Obsidian Sword, crafted (Obsidian Sword–> Ominous Obsidian Sword–> Cursed Obsidian Sword –> Nightmist–> Midnight Mist –> Shadowhawk’s Nightmist)