Consider taking this skill if your party has a bonder monk or will otherwise be enchanted most of the time (such as Orders).
This skill can severely impair the ability of the 55 Monk when farming, due to their high reliance on low health and multiple enchantments. However, runners tend to benefit greatly from it.
If the loss of an enchantment would cause your health to drop below 0, your health will stay at 1 until it is regenerated or until you get healed. However, if you get healed for less than the difference, you will die once Symbiosis runs out.