The Ebon Empire
The School of Sanguimancy
The school of Sanguimancy emphasizes magic that manipulates, controls and interacts with blood. Opponents of this school say that it violates natural law, the free will of its victims, and plays with dangerous forces at great cost. You understand that power over blood is power over the forces of life. It is a great responsibility and you are more than willing to pay the price it asks of you.
Beginning when you select this school at second level, the gold and time you must spend to copy a sanguimancy spell into your spellbook is halved.
Beginning at 2nd level when you select this school you may add Porphyria to your spellbook for free. in addition whenever you cast it you instead gain Temporary hit points equal to your Intelligence modifier plus your proficiency bonus. Whenever a sanguimancy spell would heal a target, that target regains additional hit points equal to your intelligence modifier plus your proficiency bonus
Starting at 6th level whenever you cast a Sanguimancy spell, you may spend a hit die, if you do, you roll it. you regain hit points as normal, and may add the number rolled to your spell attack roll or spell save DC against one of the targets of the spell.
Mark of Crimson
Starting at 10th level you gain the mark of crimson. Whenever you are hit by an attack, you may spend a hit die. if you do you may cast a spell with a casting time of one action as a reaction targeting the enemy that struck you. You still take damage from the triggering attack as normal.
Starting at 14th level, whenever you spend a hit dice for Blood Rite you may also increase the spell level of the spell by one without using up a spell slot one level higher than the spell slot used to cast the spell.