I was thinking the rare ethereal workshop monsters could be like you you'd get rares and epics on amber island, through evolving, I was thinking that you could evolve the monsters through the synthesizer, but it has to be at a specific level, like for example (yooreek + refined synthesizer (LVL 2) = rare yooreek) but it won't work all the time, it's rather a 25% chance for triples, and a 10% chance for quads, you'll need starpower to attempt to get a rarethereal on ethereal workshop, which makes me think of a fan made island that would give star power the amber island treatment