Brotherhood of Blood

Imagine a world where a blood sacrifice is required for the simplest cure. The mysterious Brotherhood has this power. Jericho Brightbrook came to the temple as a child after the death of his parents and is the most promising acolyte the Brotherhood has ever encountered. So great is his power, exceptions are made for him when his behavior doesn't align with temple ideals.
Jericho tires of seeing many lives ruined because of his gift. He begins to experiment with alternative forms of healing. Disillusioned by the temple and his failures, Jericho is forced to flee to the land north of the mountains to evade his former master.