He creates chaos according to his will

Celestia's POV: 

I reached the starting point of the stream as fast as I could get there. I was able to hear the Vampires arguing with each other. So they are still here! They have not yet left this place. 

The noise was coming from behind the ashwood trees. I was about to step in there, but I hid behind the tree trunk when I saw Theo. He was good! His neck had no trace of a wound. 

Theo has the power to heal himself, but still, I wasn't able to comprehend why he was facing the Vampires causally without even battling with them. What is going on here? 

Theo was quietly watching the Vampires who were quarreling with each other. Then after a while, he shouted, "The sun is going to come up soon."

It made all the Vampires shiver. And Theo wasn't lying. Within thirty minutes, the sun is going to rise. If they all stay out on this ground after the sun comes up, they all will crumble to dust.