The Shadow

The Shadow is a mob of all dimensions accept the nether. It is in dark places and is a shadow. You can't see it in the dark but in the light it looks like shadow on the ground. How it works is it sneaks towards you and latches on to you without you knowing. When it gets in the light it will run away. Over a long period of time it will slowly drain your hunger bar. When your hunger bar is empty it shapeshifts into the nearest monster in the render distance and attacks. The only difference is it looks like the shadow of the monster standing up, rather than the monster it shapeshifted into.