Vampiric Nature

You are descended from vampires, inheriting some of their supernatural abilities as well as their vulnerabilities.

Gain the Bite maneuver:

Blooded

In this condition, you have recently drank blood, and gain strength and power. Gain the following benefits:

You also gain several weaknesses:

At the end of each round, roll a Con save, DC 10 + 5 per round; so DC 15 in round 1, 20 in round 2, etc. If you pass this save, you remain Blooded, but if you fail, you lose the Blooded state and have to feed again.

Self-Healing

When you are Blooded, you can, as an immediate action which does not require consciousness, heal yourself for 25% of your max HP, removing the Blooded state. This can happen if you drop to 0 HP, or are stunned or incapacitated, etc. The only way to prevent this would be some sort of temporal stasis.