These animals were once perfectly normal horses, but through dark and little known magics, mages of the northland have created something altogether different… altogether more dangerous. The magics summon some form of otherworldly force into the host of the horse, giving life to the nameless force placed within them.
The magic changes them to a charcoal black, making their eyes a livid red. Only the mage who enchanted them seems to be able to command them, any else who attempt to do so are at risk of their lives.
Encounters with these beasts are rare, so it is unknown if the dark spirits within them can be exorcised, or even if the monsters can be slain.