Reading back over this ive decided to rewrite it as it was pointed out to me that some abilities were similar to other champs. I'm going to think out the abilities and passive abit more and will edit a link to a new post when done.
edit: https://boards.na.leagueoflegends.com/en/c/skin-champion-concepts/QKwZ5Z5B-updated-champion-concept
Mundo q passive as a regular passive sounds promising. Unfortunately the abilities feel uninspired though. Q wind up is like Vi but underwhelming as from what i read doesn't increase distance with time. W I believe is the same as Syndra(even the name i believe) but has no place in your kit as a melee champion you want to keep them close. E is a aoe (but not really) udyr stun. R is the only ability that is unique.(even then only somewhat. As lee sin slams the grown twice with e if i remember correctly. Granted the second slam doesn't do damage but you get my drift) Your gonna want a gap closer as an ability and some way to mitigate losing all your health from using abilities like other health resource based champs (mundo has insane health regen/mord gains a shield from dealing damage/aatrox a deathless state and heal on hit) I really don't dislike your idea but your individual abilities feel clunky. I do seem some combos like stun q w to win trades but Riven already exists. Your core idea is solid. Shoot me a message if you decide to change anything as I would like to see where this idea goes.
