Fatigue

Loki was feeling incredibly lethargic as he tried to move his body but was unable to do so. He tried to open his eyes but it just made him feel dizzy and what he saw was just a blurry mess. Not only was his eyesight messy even his very thoughts were all over the place, and his memories were in total disarray. He could not remember a lot of things, nor could he focus on anything, he wasn't even sure what he did yesterday, even remembering his name was a little off. 

He was also feeling incredibly cold as if his entire body was being assailed by ice and snow, it was as if his very veins were a nightmarish tundra freezing him from the inside. 

The last time he ever felt this way was when he was younger and just started training to become an assassin. It was when he had exhausted everything he had when his physical strength was drained, his mental power exhausted, and his mana empty.