User blog comment:Doctursea/Weakest of their league/@comment-4709478-20121031074654

I personally think certain champions work only under certain comps. Like Karma, I was fooling around in a chatroom earlier today and someone said that Karma seems to work well with an a champion that has a dash of some form (like Fiora or Tryn) but not so much with an actual ranged ADC.

Nasus is probably along the lines of Sion. They don't really fit alot, if any, comps. These two champions have to get as much farm as possible before they can even be useful to their team. I'm not saying these two champions are weak or UP, just that they need farm to preform well. Which, imo, is a flaw. (inb4: "All champions need farm to preform well." Supports don't, Junglers get their farm through GP5 mainly, APCs preform through levels to a certain point, the only "role" that needs farm is top and ADC.)

Heim is probably the weakest imo (and even then, he's not that really weak). If they were to make his turrets like Zyra's plants, he'd probably have more power late game. But, atm, his only real power is hard pushing. That and that blasted passive that can heal turrets (I hope Riot doesn't change that when they rework him...)