Small Rework to Mundo to make him make more sense thematically

He deals entirely magic damage with his abilities and has no real synergy with AS or autoattacking in general, nor does he have any AD scalings on his kit.

What he does want tho is something for losing a lot of health, which is what the general idea of his E on live is. So why not amp that up to 11 and give him some added bonus to being low by giving him damage, actual damage not just AD, for having low health?

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HP regen reduced to 2.5 - 11 from 7.8 - 20.5

Autoattacks fire 60% faster

Passive increases regen by 10% per 1% missing HP instead of giving Mundo 1.5% of Max HP as regen per 5

E now causes Mundo’s autos and cleavers to deal 3/5.5/6/8.5/10% of Mundo’s missing HP as bonus magic damage E CD starts after the duration ends and is now static (unaffected by CDR)

E bonus AD removed but now resets Mundo’s autoattack E CD increased to 12/11.5/11/10.5/10 seconds from 7 at all ranks

R now cleanses grievous wounds on cast