Playing against shaman and handlocks are autowin
Playing against warrior and druids are almost auto lose
I main shaman and that class seriously frustrates me sometimes because all the matchups are about the same chance and super dependent on your draws. So when a board is full of 2-3 health minion and I don't have lighting storm, or when a board has big legendary such Rag while I don't have hex make me very angry. It's like when I win I got lucky and have the answer cards for that situation, and when I lose I got unlucky and didn't draw the answer.
And when I get angry I play some hunter because if the matchup is good I just outright win, if the matchup is bad I don't even get mad because matchup is matchup.