I'm currently playing an MMO where on top of HP damage, you can get Minor Injuries or Severe Injuries (usually from dungeon traps) and they will deplete you HP a little at a time (like 2 points every 5 minutes) unless they are healed. You can heal them either by standing in a heal spot for 3 minutes (per minor injury, longer for severe) or by using these "Injury Kits" that are actually kinda expensive.
It could be something similar with Sapphira?
It could be something similar with Sapphira?