A little pic I did using the Discworld's idea of the Dungeon Dimension and a few characters in abstract form to make it work.

"Imagine a vast, dark ocean filled with untold horrors swimming through the frigid cold, desperate for warmth. Imagine worlds, full of life and energy and magic, submerged in this ocean, small bubbles of flickering with light. The creatures are desperate to get in, to have that warmth, even as they know getting in would snuff out the light and warmth they seek. And the more intense the light, the brighter it burns, the more creatures it attracts, clawing and struggling to pop the bubble. They want in."