When the time comes for describing the monster the GM looks up and to the left, searching for the words, and the hands come out and begin delineating and caressing the invisible contours of this thing they are imagining. The players are transported, to some extent, by this performative enactment of monstrosity. It is not merely the actual description of the monster but the struggle for description that bears the aesthetic reward. There is a moment of shared mythopoieia where the GM is delvi...