Talk:Thornmail/@comment-24055932-20170713002049/@comment-25903301-20171004002653

Life steal happens after the auto damage is applied therefore all auto attacks will have reduced lifesteal. It only lasts for 1s so that it doesn't affect other heals. It basically works when the tank makes himself the only target for the enemy adc. That way any damage from the backline isn't healed as easily.