Fantasy world of polymorph clay creatures.

Small creatures named the Polymorph have been living in hiding under the earth crust, for thousands of years. Slowly but surly the cave systems they lived in moved up because of earthquakes. One fateful day it opened all the way up to our civilisation. Finding little blobs of clay that were moving slowly and took at first shapes of plants and the more the were exposed to new objects some even combined those objects to form cute fantasy creatures.