Broodbound

Benefits:

• Regenerative Flesh: When you take damage, you can use your reaction to spend a Hit Die and heal immediately. You can do this a number of times equal to your proficiency bonus per long rest.
• Mistform (1/day): As a bonus action, you can become mist for 1 minute (as per gaseous form, but you cannot pass through magical barriers).
• Predator’s Grace: You gain advantage on Dexterity (Stealth) checks at night or in dim light.

Drawback: You can no longer regain hit points from magical healing unless it is necrotic or blood-based.