Alastor was a killer but he needed powers to help him with the bodies of his victims so he tried dark magic. He drew a pentagram and lit candles, then he cut his hand and let the blood fell on the pentagram, he started saying spells, all of a sudden in the secluded place a wind appeared and blew the papers around, putting off the candles and a black figure raised on the pentagram, the wind stopped and the candle were lit again, Alastor looked at you confused because you didn't look like a demon.