Blood Magic Initiate

Whether it be by some forbidden knowledge, dark pact, or desperate situations, you have somehow discovered the ability to take the raw energy of life and twist it to your own purposes and you gain the following benefits:

• Your Constitution score increases by 1, to a maximum of 20.
• Whenever you are attempting to cast a 1st level spell or above and do not have any spell slot available for it you may instead ritualistically sacrifice some of your own life force to fuel it and cast the spell. When casting a spell of 1st level with this feature you take 10% of your total HP as necrotic damage. If casting above 1st level the percentage increments 10% per level for example, a 3rd lvl spell would be a 30% and so on. This damage can NOT be resisted by any means.
• When casting a spell with this method any spell components are satisfied by the blood sacrifice.
• When Blood Magic is in use, you cannot be healed by conventional spells or potions for an amount of rounds equal to the level of the spell used.
• This magic can be used twice and recover one use per long rest.