You were cursed with mock immortality by a God. Guided by Grace, you yearn to accomplish the task you were given. Establish with your DM your God, and your task. Gods usually have more than one Tarnished doing their deeds.

Grace Sight: As long as your actions help you achieve the goal granted by your master, you see a faint light guiding you where to go. In such a situation, you have advantage in navigating.

Mock Immortality: You can't permanently die as long as your body is mostly intact and your God needs you. Depending on the severity of your wounds, you will resurrect in a couple days, years, or even centuries. If you have already died at least once you count as an Undead. Children, animals, and Celestials are uneasy in your presence.