It's the mushrooms.. either Teemo wins or another option is that Teemo wins.
All in mushrooms.
Teemo = Server Online = Victory
Amumu = Server Offline = Defeat
Blitzcrank = Server Busy = Draw? :P
Amumu makes your team win and Teemo (usually) makes your team lose.
So I think they need to be swapped.
Riot do it for irony.
Picking Teemo = autoloss
Picking Amumu = autowin
It’s because he has a positive/happy appearance in accordance to other champions, thus relating him to a positive thing such as a victory.
A "victory Amumu"; for example, would contradict the positive taste a victory should have.
He perceives rejoice like a victory should by the way he looks.
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