 The Blackwyche can be found wrecked on a beach on Shipwreck Bay, and contains a portrait of Arthur.A nearby book starts a Tall Tale called The Seabound Soul that leads to the summoning of Arthur's ghost, which ultimately leads to him accidentally releasing Captain Flameheart upon the Sea of Thieves.Arthur again makes an appearance in The Heart of Fire, another Tall Tale, where he needs assistance releasing his crew from Captain Flameheart's curse.