Oh that ult will make people rage, just make sure your team has Soraka first or she is banned.
Fizz and teemo really piss people off.
Karthus ult is annoying too.
Fox P McCloud
Doom Bringer, when Riot finally decides to import him over =p
Singed, Trynd and Karthus (in no particular order) are probably the champions of pissing people off.
Twitch agrevates even high elio players, and he's diseased, sounds like all you desire.
One of the few that can team kill
Also on a side note
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