Sagittarius 8. Experts arguing over the authenticity of a painting.
As they argued about who painted the painting, and when, and under what circumstances, and whether or not it had been created by a group effort, or a forger, the painting kept mutating, new versions of it kept appearing, all overlaid on top of the one they looked at, or subtly emerging from layers underneath the surface, to form new layers.
As they continued to look they got tired of looking, and so the painting got tired of being, and disappeared. But when they searched for it they found it again, for they had reawakened the painting. It found delight in being any and all the paintings they wanted it to be.