Looking for a champ with dueling power, mobility and wave clear

with

Well, that's like the big 3 you're asking for... but if I had to take a guess, I'd say these champions fit the bill the best;

Albeit that's just me taking a guess.

Ekko for mid, riven for top, lucian for adc. These guys have what you are looking for starting in lvl 3 and without core items. Ahri has it too, but you need lvl 6 on her. There are a bunch more but they are item dependent.

Kog'maw