Dr. Mundo, the Madman of Zaun
My previous redesign of Dr. Mundo was one of the cases where the original kit was random and thematically disjointed enough that the changes I made ended up feeling "good enough" despite removing some of the things that made sense along with the things that didn't. A surgery performed with a cleaver, you could say.
Is my opinion still that the current Dr. Mundo is a fairly mindless Infraggable Krunk that lacks compelling gameplay and a strong thematic core? Yes, but my second opinion is that there's a lot of room to explore with the not-so-good doctor without compromising the odd bits and pieces of his current identity that are worthwhile (namely, being a regenerating, self-experimenting freak with insane pain tolerance).
So Dr. Mundo right now is...a big guy who throws cleavers, sets himself on fire, hits really hard at low health, and can both soak up and recover from a massive amount of damage. Gameplay-wise, he's nothing to write home about, and he doesn't offer any unique or exciting tools to master.
To address these two maladies, I have a single prescription: how about a crazy arm? One that can take on all sorts of gruesome transformations, acting as both the main visual read and mechanical hook for his kit. It's bizarre, sadistic, and masochistic all in one, and should help make the big guy stand out from the other muscular, strangely-colored, monosyllabic dudes that like to smash things.
Although this kit diverges from its origin pretty noticeably, the basic dynamics of the kit remain: Dr. Mundo is dangerous at low health, has the tools to get to low health, and can also regenerate once he's tired of being at low health. And of course, he still throws his cleaver - although, like the original redesign, he's given incentives to close the gap and not just poke from afar.
One unfortunate casualty of these changes, however, was the original kit's status as one of the simplest in the game. That said, I've taken care to counterbalance that with keeping his main skills simple to use, and tuning his arm-swapping mechanic so that newer players can interact with as much as they feel comfortable (hence why the current arm is always the first in the rotation).
All values in blue are meant to give a general idea of the ability's properties, and are subject to change.
Recommended Positions: Solo Sidelane
Innate: Do No 'Arm
Dr. Mundo's experimental right arm protects him from attacks, shielding him for X + (X% max HP). Once this shield is depleted, the arm will fall off, and will regenerate after X/X/X seconds (based on level).
Enemy minions and monsters that die within X units of Dr. Mundo will occasionally drop Spare Flesh, which Dr. Mundo can collect by moving near to permanently increase the shield granted by his experimental arm by X. Enemy champions, cannon minions, and large monsters will always drop Spare Flesh.
Q: Infected Cleaver
Dr. Mundo hurls his cleaver in the target direction that hits the first enemy in its path, dealing X/X/X/X/X% of the target's current HP as physical damage (no less than X/X/X/X/X) and slowing them by X% for X seconds.
The cleaver will remain in its target for up to X seconds, and Dr. Mundo will rip it out when near them, dealing X% of the initial damage.
Killing an enemy with the cleaver or ripping it out of an enemy champion will cause a slab of Spare Flesh to fall nearby.
W: Cryptic Concoction
FIRST CAST: Dr. Mundo pulls out a flask and shakes it every second, cycling through three colors for 6 seconds. The flask cycles through X, X, and X potions in that order, and always starts at the color after the one he most recently drank.
SECOND CAST: Dr. Mundo drinks the current flask, transforming his arm and restoring X/X/X/X/X% of its shield. Has no effect if Dr. Mundo is missing an arm.
A X flask will transform it into a Rage Arm, causing Dr. Mundo to lose X movement speed but empowering his next basic attack every X seconds to deal X/X/X/X/X + (X% total HP) bonus physical damage. This attack becomes ready X seconds faster whenever Dr. Mundo takes damage.
A X flask will transform it into an Agony Arm, turning every other basic attack into a burning slap that deals X/X/X/X/X + (X% total HP) damage and applies Burning Agony to Dr. Mundo for X seconds (stacking up to 3 times), increasing his movement speed by X% and causing him to lose X/X/X/X/X health per second.
A X flask will transform it into a Pestilence Arm, which attacks at X% reduced speed and charges up with numbing gas over X seconds while not attacking, causing Dr. Mundo's next basic attack to leave behind a numbing fog for X seconds that reduces enemy attack speed by X/X/X/X/X% and restores X/X/X/X/X% of Dr. Mundo's missing health while within it.
Cost: X% of shield regained (second cast)
E: In 'Arm's Way
Dr. Mundo performs an attack with his experimental arm in the target direction, with properties based on its current transformation. This attack can be charged for up to X seconds, granting various effects at full charge. Has no effect if Dr. Mundo is missing an arm.
NONE: Dr. Mundo throws a haymaker, dealing X/X/X/X/X + (X% total HP) physical damage to the first enemy in its path. Charging this attack has no effect.
RAGE: Dr. Mundo slams the ground with his arm, dealing X/X/X/X/X + (X% total HP) physical damage to enemies in the target location, increased by X% for every X% health Dr. Mundo is missing. Dr. Mundo loses X% movement speed while charging, and the slam ignores X% of enemy armor when fully charged.
AGONY: Dr. Mundo unleashes a blast of flame from his arm, dealing X/X/X/X/X + (X% total HP) physical damage over 3 seconds to enemies caught within it. Dr. Mundo loses X% health every 0.5 seconds while charging, and doubles the flame blast's range when fully charged.
PESTILENCE: Dr. Mundo emits a jet of gas from his arm, blinding the first enemy in its path for X/X/X/X/X seconds and slowing them by X% for the duration. Dr. Mundo regenerates X% of his missing health while charging, and removes all disables from himself when fully charged.
R: Malignant Regrowth
Dr. Mundo injects himself with a potent serum that causes his experimental arm to rapidly regenerate for X seconds, restoring X/X/X% of its shield every second.
If the arm has been destroyed, it grows back X/X/X% more quickly instead.