It seems that Heart Flux is not a very useful skill for teams with high chakra users, as there are better options available such as Lightning Enhancement and Anbu Assault Tactics. For sword ninjas, Intent of the Warrior may be a better choice. The crit and damage buff provided by Heart Flux is considered weak compared to other available options. There may be a misinterpretation of the skill or omegle.2yu.co a lack of understanding, but overall it appears that Heart Flux is not a particularly effective skill for M.B.