The common land and his homeland shared a boundary that he often patrolled. The undead thing had been making his evening rounds when a magical being crossed his path. Having chased it off and received something, something which he did not know yet, he continued on down the path he has worn into the dirt. His patrol took most the evening, as he stopped to inspect things. Or steal things from those who have drifted into the ethereal worlds. Being a creature of darkness, this was his preferred time to be active anyway. So, each night he travels the same course and each night he keeps a sharp eye out for anything out of place.
Tonight, he tastes a scent on the winds. His steps pause as he outstretches his neck, his upper lip curling upwards to decipher the scent. It is one he knows too well, and it is fresh. The prowling creature begins his march into the common lands, the moonlight leading the way. His ember eyes dim to an undetectable brightness. He did not want to alarm whatever it was that was injured.
The coppery taste thickens as he nears. He can make out the shadows of bodies, both standing and on the ground. He stops to observe, calling upon the black magic within him to venture forth and investigate. His powers stretch, wrapping their demonic fingers around those gathered here. He finds the lone standing figure unremarkable but healthy. Too healthy to be the one beckoning the undead thing. His magic then shifts to a smaller form curled up in the tall grasses, a youthful fiery thing. He can see the flickering flames coming from the tiny creature, but it is not she who bleeds tonight.
Dawn is beginning to color the sky and he can see a familiarity in the mare that lays motionless on the ground. The lone brown horse begins to move about, calling to her by name and coaxing her to come to. A devious grin parts his black lips as he pieces the puzzle together. He has found her once again, the mare from the beach. It seems her misfortunes have not gotten any better as he now approaches the scene. His ember eyes begin to glow again as his steady steps bring him within speaking distance. He tisks aloud, tsk tsk tsk, his head shaking slowly, a faux somber look on his expressionless face. His gaze judges the situation, the nearly lifeless foal and the equally lifeless mare. "Such a shame..." he begins, his gaze falling on the mare and the colt.
His advancing steps do not stop but instead change his paths course to wrap around the group at a few paces distance. Curling around the feathered mares backside and to the opposing side where the filly lay flickering in the grasses, he contemplates what to do. He could save the mare and colt, but could he live with himself? Should he seize the opportunity to shuffle off his daughter, leaving the others to their fates? No, he could not properly care for a child. Not alone. He stops, his head tilting in thought. What would Carnage do, he thinks...
For the first time his view shifts to the brown stallion who he is sure is becoming anxious of the undead thing's sudden appearance. Afterall, he didn't have the look of a savior. Looks aside, the being from hell did have magic and he may be convinced to use it, for the right price. "Who are you?" He asks plainly. Tendrils of smoke begin to billow with the words that leave his parted lips. The mare and colt, lay still motionless on the ground...

@Jack in the Box
Possesses health transference
and may steal your health.