While in this stance, you gain Regeneration 4. Fire does normal damage to you. Additionally, only a number of points of damage per attack equal to your initiator level may be converted into nonlethal damage by this stance; all damage beyond that is lethal. Keep track of damage converted by this stance separately; when you leave it, all such damage becomes lethal as long as it does not reduce you below zero hit points. If it would, you are reduced to zero hit points, but excess damage remains nonlethal.