Dark sun that isn't actually dark sun.
The Cloud Dancer
An intelligent vessel Made of Darkwood with silver sails and a unicorn prow, capable of planeshifting, high speeds, surface bombardment, and blessed with inherent geographical knowledge.
The intelligence, known as “Ship” is rather bloodthirsty though very obedient. His visage can appear on any wooden component of the ship as necessary.
The vessel has a well of darkness that appears to dissolve whatever touches it, leeching out the colour first. adding to this appears to add to the already vast energy stock that powers it.