Yeah, also my prediction for shadow islet is that the primordial is gonna be fandhul and it will toss chunks of ice, which collide to produce a flasque/jeeode sound.
Random "island 26" predictions; Idrk at this point; Most people don't know this but Vhenshun was released ahead of Pentumbra bc if it took Pentumbra's place it wouldn't have the mech element