Unstable Blood

Your blood boils and seems to react violently when it meets with oxygen.

• When you are felled in combat, your wounds explode dealing 50% of your max hit points as force damage to those within a 15 foot radius around you. When that happens you automatically take one fail on your death saving throw.
• On death, your whole body explodes dealing 200% of your max hit points as force damage to those within 30 feet of your corpse. This makes resurrection impossible except with a wish spell.