Blood Curse & the Seven Clans

The seven noble houses that monopolize cursed blood, each holding one power and each bearing one price: Hourshift works time, Whitescript holds memory, Duskcandle comes near death, Starcrown reads the stars, Mirrorcourt makes doubles, Vowkey binds by contract, Bloodflame kindles fire with blood.

The magic of the Seven Great Houses, running in the bloodline and passing by inheritance. To rouse it requires a medium, and it has never once come without a price.