You learned to use a specific kind of blood magic: the art of blood manifestation. You gain the following benefits:

• Increase your Charisma Score by 1.
• As a bonus action you can spend a number of hit dice (minimum of 1) to manifest a melee weapon of your choice in your open hand. On a hit, the weapon deals additional necrotic damage equal to the number of hit dice spent. The weapon does not count as magical and will dissolve after 10 minutes or when you drop it. When you throw the weapon, it dissolves after it hit or missed the target. You can have several blood weapons active at the same time, but only create one at once.