Riot Balance Team
How Riot Balance's stuff they overbuff a Champion ,so People start Maining that certain Champion people buy there skins and nerf it after the revenue for that champ is gone proceed to gut it then they overbuff another champion to get the people that started Maining that Champion to switch over and buy that champion skins.
And slowly give the gutted champion compensation buffs to balance it.
After that Rinse And Repeat...
With this's games item being so few in number for every class they should have no problem balancing stuff honestly, but always there's that champion untouched for a couple patches wonder why.