So far, every other mage champ is getting Mana compensation buffs except Karthus and Annie...
I don't know if I missed anyone else but I'm kinda miffed about it since I'm a Karthus main. (sorry Annie Players, but I don't really care :P ) even XERATH is getting mana buffs and he has a better mana regen ability than karthus's E passive so why can't Karthus get any mana buffs?
On top of that, Karthus STILL hasn't gotten any sort of new skin since his FNATIC skin (Last year Worlds)(yes, I know about his croma for his reaper, but that's not my point). That, and his Q is still slightly visually bugged (during passive, Q'ing outside his range shows a fake Q on the cursor that only Karthus players can see.)