Some thought magic came from the mind, others the soul, or the heart, or the will. But Kell knew it came from the blood. Blood was magic made manifest. There it thrived. And there it poisoned. Kell had seen what happened when power warred with the body, watched it darken in the veins of corrupted men, turning their blood from crimson to black. If red was the color of magic in balance—of harmony between power and humanity—then black was the color of magic without balance, without order, without restraint. As an Antari, Kell was made of both, balance and chaos; the blood in his veins, like the Isle of Red London, ran a shimmering, healthy crimson, while his right eye was the color of spilled ink, a glistening black.
V.E. Schwab, A Darker Shade of Magic
