Diabetes

Every hour that passes you gain one point of potential damage. When the potential damage equals or exceeds the characters maximum health they enter the downed state and make there death saving throws with disadvantage. In order to reduce potential damage the character must take a 'potion of insulin' to remove all potential damage. Potions of insulin can be bought at any magic shop for 10 silver each.

Any effect that heals hit points will reduce potential damage equivalent to the points of health healed. If any effect reduces exhaustion level (other than long rests) it will also remove all potential damage points.