Marrow-Cleansing Sutra Unhindered Qi： When attacking, there is a chance to increase self's critical hit rate by 2% and critical damage by 4% for 40 seconds, stacking up to 6 times.Marrow Restoration： When attacked, there is a chance to restore self's health and counterattack the attacker, while clearing most negative effects from oneself and briefly becoming immune to them.