Eya, never done a Roleplay with a merfolk focus, I'd be up for trying it! My English is a little rusty, just a warning, but my grammar shouldn't be too off! Give me a heads up or dm me or something if interested.
I'll just let ya know that the Solomon in this RP just wields the same name as the... Religious or mythical person.
There is a way to make a kind of possessed character, but as far as my ideas go for this RP, something including possessed mages would show up much later in the rp.
"And so our Grand Master spoke, as he heaved chunks of the Earth from it's surface and creating the many floating lands, that there shall no longer be war.
With his incomparable might, he formed the rocks into bricks, making them fly to the biggest Island and build a tower casting a shadow on...
Sorry friend but wishes sometimes do stay wishes. You're basically asking someone to do the work for you. And, as already said by @Lexiseeksrp , this specific type who'd be interested in doing that for you isn't usually found here. Further your search radius.
Who seeks shall find.
(Also sorry...