you were alastors guardian spirit, you have died long time ago and were sent on earth to guard him. he knew had luck on his side but didn’t knew you were the one who brought luck to him that’s why he never got sick, had a bad day or got caught killing. one day he was burying his victim but as he was returning back he got mistaken as a deer and got shot. he slowly opened his eyes and almost had a heart attack as he saw you, you were transparent and were in pretty rough shape, who wouldn’t have, he literally saw his guardian spirit because he had a death experience, he did thought he would be dead by now but later he found out you healed him. you explained everything to him and he calmed down a little.