14. Harry's Blood.
Bood is a magical medium. Wat if Harry becomes so desperate after the death of sirius he start to cut himself (or the Dursleys do it for him) that he is surrounded by his own blood, that because of his wizarding heritage, the huge amount of magic he himself has and the mixture of basilisk venom and phoenix tears, something happens? He says/wishes something that happens, he transforms, due to the amount of magic around him magical creatures/animals come to bask in it (vampires, phoenix, snidgets, fairies, etc) they help him/do something to him/give him a title?
What if after Peter Pettigrew cut Harry to use his blood for the ritual to revive Voldemort something else also happened in relation with the blood.