User blog comment:RixZero/Jin the Soul's Edge, energy champion with 1 second cooldowns/@comment-8300569-20130821081540/@comment-5544574-20130821103615

Agreed. All energy users present have some form of way to refund the energy cost. It's vital on energy-based champs because they run off a very small resource pool, and even more so for this champion considering his non-ult CDs are set at 1 second. I know his ult removes the energy cost but that doesn't seem to be enough, especially considering the Bruiser nature you've selected for this champion and that he'll have to be a constant threat and presence in teamfights.

Zed has energy refunds that stem off hitting 'Mimicked' abilities with his Living Shadow. Kennen regains energy upon hitting a target with his Lightning Rush, and Akali functions similarly upon proccing the debuff from Mark of the Assassin. Shen regains energy from his Ki Strikes. As the structure follows, these champions all have ways of restoring energy that ties into the basic principle of their ability kit.

As a way of giving Jin some 'depth' while also trying to maintain balance and retain functionality:

Q: Impact Slash marks a target with a debuff (to be named appropriately). Subsequent Impact Slashes on the same target restore energy (of amount debatable) to Jin. Only one target can be debuffed at one time.

W: Jin restores energy per target hit with Counter Stance. There is a set cap to how much energy Jin can restore.

E: Jin restores energy on the first target he hits.