The 2 champs I hate facing in ARAM
The first is Varus. He's extremely safe and I never see a varus player do poorly. I mean I know people complain about Sona, but varus is worse IMO.
The second one is karthus. He throws a snowball, turns on define, and then feeds. I hate this because it feels like there is limited counterplay to it. For how ARAM's map is set up, I feel like his passive is just too powerful.