Exhaustion for Everyone
Updated OneD&D Exhaustion table: for each level of exhaustion, you get -1 to every d20 roll you make. At 10 levels of exhaustion you die.
Additionally, if you go down to 0 hitpoints in combat and are picked up/revived, you gain a level of exhaustion when combat ends. This exhaustion can only trigger once per initiative-lead combat encounter.
(These rules I feel make exhaustion less weirdly and abstractly punishing, but makes it more common and more of a mechanic to work around.)
Comments