The Warhorse of the Apocalypse is a towering, skeletal steed with flames flickering from its hollow eye sockets and between its rib bones. Its mane and tail are composed of ethereal, dark energy that trails behind it like smoke. The horse's hooves are clad in scorched metal shoes that leave fiery footprints. Its overall appearance is menacing, with an aura of dread and power, fitting for a creature heralding the end times.