"Well, Draco has Veela ancestry on both parents’ sides. I mean—look at them. Big shocker there. It’s far back enough in both family’s trees that, under normal circumstances, he wouldn’t have manifested at all. However, when Voldemort’s dark magic was torn from his body, the sort of—magical vacuum, I guess, that it created, pulled those Veela genetics out in him and voila. Beautiful, terrifying, creature of the night."