Artifact

Og'tharoz, remaining translucent and intangible, hovered above the roof of one of the main towers of the palace walls, his keen eye scanning the horizon for any sign of threat. 

The frost forming in the night was his ally, concealing his presence from the watchful eyes of the dark elves patrolling the walls. 

With the agility of a specter, he moved in silence, his almost transparent body blending in perfectly with the icy environment.

The night breeze whispered as Og'tharoz slowly crossed the roof of the tower to fall right behind the two archers guarding it. With a fluid gesture, he crossed the ceiling like an ethereal shadow, emerging behind the sentries without them realizing his presence.