Deathmark Heavens Door

You have manifested a Deathmark. Determine its appearance. You gain the following benefits:

• Increase your Constitution score by 1, to a maximum of 20.
• You learn Revivify 
• You can cast Revivify through your mark once per long rest, after the first use this power can be used again but you take 2d6 worth of damage that can only be healed through a long rest.