Unimmortal

Your soul no longer releases cleanly into death. When you die, your soul clings to a prepared corpse, phylactery, grave-site, or undead servant you designated during a long rest. If that vessel is on the same plane and remains intact, your body reforms there after 1d10 days with all hit points and no equipment. If the vessel is destroyed before you reform, you die normally. You can have only one vessel prepared at a time.

This power has its own stable page so it can be linked from any character, item, location, story post, bargain, curse, or future reward.