Sanguine Empowerment

Your blood magic has improved to the point where you can bolster the power of your spells. When you cast a spell that deals damage, you may deal damage to yourself equal to half of your spellcasting classes' level. If you do, that spell deals its maximum damage. Alternatively, you may choose to instead deal damage to yourself equal to your spellcasting classes' level. If you do, that spell deals its maximum damage plus Xd4 necrotic damage, where X is equal to your spellcasting ability modifier.