To answer those questions- 1: All of his abilities have not yet been determined, but what has been revealed so far is superhuman physical ability (speed, strength, agility, ecetera), regenerative abilities, and, (as explained in more detail in chapter 2), the ability to mind control mortals.
As for the threadmarks, that was my bad. I forgot to make chapter 1 into a threadmark, but DIDN'T forget to do the same with Chapter 2. So I made chapter 2 a threadmark before chapter 1 was, and thus it's listed first. Not sure how to change that.