I approached the black stallion, the creature already exuded power and grace, but the blood runes would elevate it to something extraordinary. Carefully, I pricked my finger with a small, sharp blade, and a drop of blood welled up. With steady hands, I began inscribing the ancient runes onto its pitch-black coat, the blood forming intricate patterns as I worked.
As each rune took shape, a faint crimson glow started to emanate from them, casting an eerie light on the stallion's sleek fur. The horse stood still, its powerful muscles twitching slightly under my touch. With every stroke, the runes pulsed brighter, the glow intensifying.