Surging up and forward through the front yard I saw the thing I had heard and smelled before. More formless than humanoid, it writhed forward like an amoeboid centaur. A vast skirt of mud and gravel and debris swirled around to form a conical base that supported a lumpish torso with multiple arms. At the top of the torso I saw a shape that could have been described as a head, and when some of the slime dripped down I knew I saw bone.