The shader 'totem' is a model designed to be a standardized shape for showcasing the material quality of a Cycles shader. The contrast of complex and simple structure makes for a reliable form to judge your material's parameters. Two light setups - HDRI environmental illumination and traditional 3-point lamps - give options for final render result. HDRI is recommended for materials with transparent refraction.
This totem is used in the Shader Forge training series and the CGC Shader Pack Vol 1 on the Blender Market.