What is Oak Sage Healing?
Oak Sage is unlike the Barbarian Skill Battle Orders in that it can heal you if you either unsummon your oak sage once you or your groupmates are damaged, wait for its life bonus aura to dissapear, and then recast it. It will heal the full amount of life it gives as a bonus. Many players consider this an unfair tactic in PvP and for good reason too. Good etiquette states that if your Oak Sage is slain, and you wish to recast it, you do so before the Life bonus aura has disappeared, a manageable amount of time.