You have disadvantage on ability checks and Constitution saving throws. If you fail a saving throw against an effect that causes fire damage, you also gain the stunned condition until the end of your next turn. Magic such as the regenerate spell cures this damage. Alternatively, someone can tend to the burns and make a DC 15 Wisdom (Medicine) check once every week. After ten successes, the burns heal. If you already have third degree burns, you instead suffer fourth degree burns.

Notes: Disadvantage: Ability Checks, Disadvantage: Constitution Saving Throws, Stunned