Imperial Blood Magic

This form of blood magic allows the user to access incredible power, new spells, and some draw backs.

Covert Hit Dice to additional spell damage dice. You take damage based on the Level of the spell cast at plus your caster level.

Damaged taken from combat ie: You take damage from a weapon that would spill blood. Daggers for example.This kind of damage creates the pool in which you can use the blood magic along with a cantrip which generates the damage you take as sated above.

In addition you can, as a reaction, for one turn increase your spell DC by using one of the Blood Pool Dice. You take damage equal to what you rolled and your Con modifier.