Wondrous Item, Legendary (Requires Attunement)

The Antikythera is an engineered magical compass. While holding this item on the mainland, an island, or other form of dry land, you can take a Magic action to chart a path to a location based on the stars (The Constellations, chapter 1). This allows you to sail to the selected destination despite any lack of knowledge of the path or any troubles at sea.

In addition, the compass can mend damage to a ship. As a Magic action, you can restore 50 Hit Points to a ship you are aboard. Once you do this, you cannot do it again until you finish a Long Rest.