A partir du niveau 3, when you take this Hemo-Concentration, when you succeed an attack roll with an attack with a piercing weapon either coated in or made out of your blood, you may deal 1d10 damage to yourself as a bonus action. If you choose to do this, the creature pierced with your blood takes 3d10 necrotic damage

Beginning at 6th level you learn how to control the blood of others with some level of finesse. As an action, you can attempt to gain control of another being with blood (As ruled by the DM). They must succeed a constitution saving throw or be controlled until released. Beings containing your blood will roll with disadvantage. You can not control beings one or more size classes higher than yourself. You control them until they either succeed in a save or you lose concentration. The target makes a new saving throw at the end of each of its turns. While the creature is under your control, you may use your bonus action to hold the target in place. You may also use your action to take total and precise control of the target. Until the end of your next turn, the creature takes only the physical actions you choose (Does not affect mental actions) and doesn't do anything that you don't allow it to do. During this time, you can also cause the creature to use a reaction, but this requires you to use your own reaction as well. You lose control if the creature goes beyond 60 feet away from you.

After 11th level, you are able to control the blood of willing creatures in order to assist them in a physical task. When helping allies on a Strength, Dexterity, or Constitution roll, they roll with advantage and your Proficiency modifier is added to the roll. This can vary from helping an ally clear a jump to making them swing an axe harder, but cannot be used for non-physical tasks, such as those that require an Intelligence, Wisdom, or Charisma roll. This can be done from a distance up to 60 ft.

At 14th level, you gain the ability to cause irregularities in enemies' blood from a distance. You may use this feature as an action. Make a ranged spell attack with Constitution as your casting ability. A creature with blood, (as ruled by the DM) within 60ft of you must make a Constitution saving throw, if the attack hits. The target takes 5d10 necrotic damage on a failed save or half as much on a successful one. You may do this a number of times a day equal to your constitution modifier, minimum 1.

After 17th level, you have nigh on mastered the art of controlling others. It is especially effective when merged with your blood. If your blood enters a another being with blood (As ruled by the DM) of one size class larger than you or smaller, they are considered to be under the effects of Blood Bending, until they succeed on a Constitution saving throw of your Hemomancy Save DC + 2 or you lose concentration on your blood. You may concentrate on up to three creatures containing your blood or one with your blood and one without, though in this case the one without your blood rolls based on your normal Hemomancy Save DC. The creature(s) makes a new Constitution saving throw at the end of each turn. If you terminate the control early, you may deal 5d10 necrotic damage to the target. You lose control of a creature if it goes beyond 60 feet away from you. You may only forcefully terminate this effect and cause the associated damage a number of times per day equal to your Constitution modifier. (minimum 1)