These are masai herdsmen .Demons don't drink blood rather they make you hate your enemies more commit adultery kill steal which you are quite better at than demons

And tour fire breathing holy ghost should go look for the Victors the Cullens blades mommy or Morbius

Why do the tribes drink blood?

Blood mixed with milk is used as a ritual drink in special celebrations or given to sick people to foster the healing process.

Matthew 3:11 KJV: I indeed baptize you with water unto repentance: but he that ... worthy to bear: he shall baptize you with the Holy Ghost, and with fire:”