 The Lich is capable of sustaining tremendous physical damage, and is immune to disease, poison, fatigue and other effects that affect only the living.However, despite all its undead "gifts", a lich's most valuable resources are its vast intellect, its supreme mastery of sorcery and limitless time to research, plot and scheme.Since a lich's soul is mystically tied to its phylactery, destroying its body will not kill it.