User blog comment:Baristar/Suggested Champion Rework, Dr. Mundo the Zaun's Beyond Madness/@comment-3391671-20180602065945/@comment-3391671-20180602200816

While I do want to see Mundo's kit reworked into something that reflects his maddened nature more, I have to agree with Ninja about how the innate does not agree with that theme. This is clearly an issue because Mundo will "go where he pleases" but not where the player wants him too. As funny as it is to play to the character's most iconic line, it's only going to lead to frustration.
 * To go over again, the innate can reflect the "goes where I please" idea behind Mundo, but has a couple troubling aspects that might have been forgotten as you were making this kit.
 * First, the required cost in order to enter this phase grows over time. This then brings to question, is the purpose of this innate an advantage or disadvantage? I ask this because with a lower requirement early on, the Borderline Psychopath will trigger too often, and latter on with the high health requirement, it might not trigger as much. Either way, the activation of it can be hampering; review a champion like who also features an uncontrolled "enraged" mode when damaged or damaging.
 * Becoming does play to becoming psychopathic... maybe? But for the gameplay, it means that Mundo does become basic attack-only, which I don't believe is supposed to be Mundo primary way of dealing most of his damage in-game. This may just be because of his old kit, which is somewhat-but-not-so-coherent. This is reminiscent of 's {ai|Glory in Death|Sion}}, but far less impactful because of how often it can be triggered.
 * Maddening serum's nature as heal is left arbitrary, whether if it's supposed to heal only once, or if it's an overtime. Either way, its conditions can be a problem as a non-sensible heal of health, especially when dropping below because as long as Mundo does not take anymore than 5% of health when dropping below that threshold, he'll heal it back up to above 30%, and continue a cycle of being healed infinitely.
 * Was there a necessity to buff Sadism's innate (even if it's now only during Psychopath)? On top of that, to mention again, aside from activating E before entering his psychopath mode, Mundo cannot use the enhanced version at all. Also, I believe it to be too forgiving to have health cost consumed "after attacking." If you don't want Mundo to lose that bit of health because his target died before he used his AA, then have the health cost refunded by half after activating. Any ability should be punished for being activation-spammed; having it free means that aside from the bit of cooldown, Mundo can reactivate E with no repercussions.
 * One thing I will compliment is that you moved the buff to after the AA is initiated supposedly by the enhanced E. It means that your  buff is not wasted because of a duration. However... how long does Mundo have before the "next attack" expires? It's not displayed, unless it is not there because of badly written code.
 * I don't know about enlarging the champion's size, as it really only makes them more vulnerable unless abilities adjust. But as for gaining temporal ... it doesn't agree with what being sadistic means. Of course, not everything has to be according to their name, but the way Sadism works is to represent the "wants to inflict pain" aspect of the term. "Increasing health for damage taken" is masochistic if anything.

To summarize, the changes have some moments of appreciation, but a lot of others that require some explanation as to why you implemented them in. Mundo is an older champion with an old kit, so I believe that your changes may have even been too lukewarm to better him.