Manaless/ resourcelss champion??
the main reason Riot kept nerfing mana (remove mana potions, shaft 90% of mana regeneration) was cause "champion with wave clear could farm fast and forever" and it was then fair for some champs to dont have mana.
but after all this changes. champion that dont have mana/ energy [

etc] have a huge advantage over the other champs. as they can spam their skills either to farm. to dodge or to pressure the lane