Hemomancy Initiate

You have delved into the forbidden art of Hemomancy , learning to fuel your spells with your own vitality.

Blood Casting. When you cast a spell of 1st level or higher, you may choose to cast it as a Blood Spell, replacing all non-costly material components with your own blood. When you do so, roll a number of d6s equal to the spell’s level and take necrotic damage equal to the total rolled. This damage cannot be reduced, ignored, or transferred in any way. You may use this feature a number of times equal to your Proficiency Bonus per Long Rest.

Empowered Blood Spells. When you cast a spell as a Blood Spell, it gains the following benefits:
You have advantage on all spell attack rolls made with the spell, and creatures have disadvantage on saving throws against the spell.