Brawler has a skill that converts a percentage (currently 10% skill lv 1) of Max HP into MP. When using this skill with low enough current HP I can die from it. This however does not happen with other skills that uses HP as resource. Example: Max Hp = 2000, Hp consumed = 200 If current Hp < 200 and I use the skill --> I die. Success rate 100% Tl;dr I can kill myself on my brawler with brawler skill.