Blood Mage

You have gained the ability to enhance your spellcasting at the cost of your own life-force. Upon taking this feat, you gain 3 "Blood Dice", gaining an additional Blood Die at 8th, 12th, 16th, and 20th levels, up to a maximum of 7 Blood Dice. If you take this feat at a later level, you gain all the blood dice you would have gained at earlier levels. You can use your Blood Dice to do the following.

• You maximize the damage for one die on a spell that you cast, at an exchange rate of one Blood Die per damage die maximized
• You may expend one Blood Dice to gain advantage on one attack made with a spell. Expending more dice would allow you to have advantage on multiple attacks the spell may make, one example being spells like eldritch blast.
• You may expend two Blood Die per level above the normal to cast a spell at a higher level, without expending that higher level spell slot. To be able to do this however, you must be able to cast spells of the level you wish to up cast the spell at, and you will of course still expend the base spell slot. You cannot cast spells at a 9th level with this feature.
  
  For each Blood Die expended, 1d4 damage is inflicted upon you. You regain 1d4 Blood Dice upon finishing a short rest, and regain all expended Blood Dice upon a long rest.