Blood Mage

You have learned the art of using your own blood to power your spells. Gaining the following benefits.

• When you cast a spell, you may spend a portion of your Hit Points to empower a spell. To empower a spell, you must roll a hit dice of your choosing, adding no modifiers. You automatically lose the number rolled in health, but empower your spell's damage by the same amount.
• You may expend one hit die's maximum of your hit points to increase a spells save DC by 1. You may use this option multiple times per spell cast.
• You may expend any number hit die's total maximum of your hit points to increase a spell's level by the number of hit die worth you spent.