Blood Magic Aficionado

You have a special talent related to the use of Blood Magic, giving you the following benefits:

• Increase your Constitution ability score by 1, to a maximum of 20.
• As an action on your turn, you may take 3d8 necrotic damage, which can’t be reduced in any way. If you do, one creature of your choice that you can see within 30 feet regains a number of hit points equal to the necrotic damage you take. You can regain the use of this feature at a short rest.
• Whenever you are covered in blood, standing in a pool of blood, or similar, increase the damage of all your spells by 1d8.