I made a procedural geometric structure while learning about Scene Nodes and Node Capsules in Cinema 4D. You can see my node spaghetti below. I animated the geometry to change over time. The rapidly changing geometry and lighting makes me feel as if I'm staring at a "biblical angel". I used Redshift's progressive rendering to give a grungy, noisy look to the animation, and also for the fast render times.

PHOTOSENSITIVITY WARNING:
Due to the random transformations applied to animated geometrical objects over time, the lighting and colors change rapidly. Do not watch the video if you have any history of photosensitivity induced seizures. I have provided choice still frames of the animation below for your viewing. Sorry for any inconvenience!