Mark of the Raven Queen

You bear the mark of the Raven Queen, a binding symbol of your eternal service. You gain the following benefits:

• You cannot die except as a result of an effect that would completely destroy a creature, such as the disintegrate spell, or unless the Raven Queen wills your death to bring you peace.
• Upon collecting a third failed death saving throw, you continue to make death saving throws each hour until you collect a third success, whereupon you regain 1 hit point.