Memory:Shadow wyrm

Collossal, and yet, tiny, this creature is baffling to look upon. It seems to exist on the border of reality, somewhere between existence and nothingness, a shimmering black color, somehow unstable. Giant black eyes stare from the mass of ink-black scales, a gigantic roar echoing through your ears and shaking the whole world around you. A huge shadow looms on the wall, stretching to the ceiling. You feel quite cold in its presence. The darkness on the ceiling begins to drip down, forming a huge head with immense jaws bearing strong teeth. You can hardly make out any details, as the apparition is completely black and doesn't reflect the faintest bit of light, but you feel that it must be staring at you. It drinks all light and warmth from its surroundings, and some more drops of shadow fall away from it, beginning to move independently from the horror that spawned them.