Honestly if devs really want to capture the class fantasy and theme for dark knight. Because we embrace our darkness and love being wounded. Our ult should be more on a wound point system. Where our wounds would add damage mitigation and damage buff. As our class powers our darkness throw pain, suffering and hatred. So 100% hp the ult would give us 0% damage mitigation and dps buff. 99%-75% would give us a 25% buff to both. 74% - 50 would give a 50%. 49% - 25% would give 75% and finally 24% and lower would give 100%. This honestly fits the dark knight theme far better then Living dead.