Do you consider Mundo balanced?

I just wanted to know if I'm the only one who feels like Dr. Mundo is WAY too strong at the moment...

I personnaly find him very broken, his whole kit is free damage and allow him to build full tank without any drawback to his damage, and he can regenerate 72% of his health by just pressing R ... Sure, he gets countered by grevious wounds, but even if he had grevious wounds on him for the full duration of his ult (wich is almost impossible since his ultimate also gives him movement speed to run away/get out of range/ dodge skills), he would still regenerate 36% of his max health (not counting his passive wich is also free regen)

He can deal 120.8 damage per second to every unit around him with cinderhulk at level 18, and this with 0 offensive items

25% current health damage every 4 seconds (if he doesn't get ANY cdr), with a minimum damage of 280 coz why not

gets free AD every 7 seconds AND empowers his next basic attack based on his MAXIMUM HEALTH (because why not allow a 5000hp champ to deal damage based on how tanky he is instead of basing this damage on the actual offensive stats he has)

Yes, he has health cost, but the highest cost he has is 90hp on his Q, and half of it is refunded if he lands it, and even if he misses, 90 hp on 5000 is nothing and he can regenerate that in the blink of an eye.

I feel like he either need nerf on his damage, or change his spell costs to be % health instead of flat HP...