I did a quick search but didn't really find anything about this. What about a plugin that makes it possible for mobs to regenerate their life, both friendly and hostile ones? Similar to how the player life regenerate, but with a customizable timer on how fast they regenerate health per mob. Example 0.5 heart every 5 sec for X while 0.5heart every 20 sec for Y and the feature disabled for such as the dragon. If this would be possible, would it be doable without causing large amounts of lag?