I wonder if Nano Banana spits out an image and I copy it by hand into a different medium like acrylics, chalk, or charcoal. Does a manual transcription suddenly render the image worthy of copyright?

This also raises the meta question: how much does an image need to change to acquire a new copyright? For example, if you change the Last Supper to include two fat Jesuses on either side of the single skinny Jesus, is that enough?