Iv'e been playing Dr Mundo for a while now and ive watched him be fully overhauled, nerfed, buffed, and..... aloised.

with that said i find mundos late game scaling and teamfight/splitpush pressure makes him incredibly rewarding and consistent, and once you get the hang of him, he feels unlosable.

Tips and tricks:
mundos w absorbs 80-90% damage taken for the first 0.75 seconds so use it to absorb big abilities or ults to flip fights, you can also ult during the w to start your ult with low hp stats then immediately cleanse the damage back for a quick burst of survivability.
Mundos q does such good early game damage that 4 cleavers can change the lane from lost to won, the more you play the better youll get at weaving cleavers through minions but outside of that remember their strength and use them whenevrr possible.
mundos q does extra damage to jungle monsters and has a higher minimum damage so you can normally throw a cleaver at your blue/redd if your jungler starts topside to help their clear dramatically.
your e isnt just scaling for damage, its your second poke tool, use it to make walking up to the lane to farm less worrying as you can q your laner as you walk up ea minion into them, then land another q for a suprising chunk of damage, then use e if he extends the trade to help escape and maintain value.