Spiritual Energy

Arthur walked through the troubled streets of Yalenia, listening to the city shake as the tower still crumbled. The earthquakes rushed through the city, straining its infrastructure, before traveling through Arthur's core. 

This was his own doing. 

A love story fulfilled, even for just a moment– Cyrian met Elara once again. Arthur had no idea why he did it, but for some reason, he felt alive because of it. His impact on the world, the tower of yearning itself, brought a defiance to everything he fought against. 

"You there, stop!" shouted a patrolling knight as he caught a glimpse of Arthur, but the next second, there was nothing.

[Light Bending] 

The rune floated, lacking a form, in his hand as it shrouded Arthur in a cloak of light bending that prevented others from seeing him. As long as light did not bounce off his body, then the human eye cannot see him.