Bloodmage v 1

Those who deal with blood magic are often outcast from society. The art is even more hated than necromancy. Wizards who follow this Tradition sacrifice their own life force to enhance their spells. Bloodmages are considered the most deadly magic users, but their self-sacrificial nature means that killing one is a very brief experience.

Arcane Blood

Beginning when you select this Tradition at 2nd level, you may use your blood as an arcane focus, as long as you are actively bleeding. This can obviously be done with a weapon that does piercing or slashing damage, such as a dagger.

Once a wound is opened up, it only stays open for a minute before it seals.

Blood Magic

Starting at 2nd level, you are able to enhance your magic with your own blood. You may use a bonus action to roll a number of d8s, up to your Constitution modifier, which total is dealt to you as necrotic damage, which cannot be reduced in any way. For each d8 rolled, you gain 2 blood points. You can use blood points on Blood Boons, which are detailed in the Blood Boon Section. You can use only one Blood Boon when you cast a spell.

You gain two of the Blood Boon options of your choice. You gain an addition blood boon of your choice at 6th, 10th, and 14th level.

All unspent blood points disappear at the end of a long rest.

Blood Regeneration

Starting at 6th level, you can use an action to reabsorb some of your lost blood. Spend any number of hit dice to gain half the total rolled as hit points.

Once you use this feature, you cannot use it again until you finish a short rest.

Blood Drain

Starting at 10th level, you learn how to extract the life essence from other creatures. Whenever you kill a creature of CR 1/4 or higher with a spell, you gain 3 blood points.

Blood Tougness

Starting at 14th level, you've become incrediblely familiar with pain. You gain resistance to necrotic damage, except for the damage taken from the Blood Magic feature, and your hit point maximum increases by your wizard level. Whenever you gain a wizard level thereafter, your hit point maximum increases bny an additional 1 hit point.

In addition, the dice used in the Blood Magic feature to gain blood points become d6s instead of d8s.

Credit: vesner / deviantart