Hemotheurges

Hemotheurges are a prestige class available in There Will Be Dragons.

DC10 Knowledge (arcana)

Hemotheurges are mages who magically override their body's failsafes to produce more blood that they need. In doing this, they can greatly increase their abilities. The cost, however, is that they become corpulent masses of blood-engorged flesh. There is much distaste for them in civilized society.

DC 15 Knowledge (arcana)

Hemotheurges suffer from their blood-induced corpulence in more than just cosmetic ways. The stress on the hemotheurge's body can prove dangerous. If pressure on their brain becomes too strong, they will fly into a murderous rage until they fall unconscious and gradually bleed out.

DC 20 Knowledge (arcana) Hemotheurges can use leeches to great effect to manage their excess quantities of blood. Doing so affects their constitution, but allows for safer use of their magic.

DC 25 Knowledge (arcana)

Rumor has is that a sect of blood mages have discovered how to manage the powers of hemotheurgy without the unpleasant side effect of the corpulence. Stories about this sect seem to point to (insert name of city in Red dragon territory)