What happens when you go below zero hit points
Generate death.txt
Based on the Save vs. Death supplement from Basic Fantasy RPG.
When a player character goes to zero hit points or below, as a result from an effect that didn’t already provide a saving throw, roll 2D6 and consult the following table. Add the constitution bonus to the roll. Divide the current hit points by the character’s level and add it to the roll. That makes it 2D6 + CON BONUS + (HP/Level). The effects of negative hit points fades as a character goes up in levels.