I was playing arena a while ago and had the choose from 3 different classes card involving Shaman. I can't remember the name. I pick devolve not reading it correctly nor really thinking at all. I play it while I have 3 minions on board and opponent has none. Yeah...I got BM'd for that one. Another I do quite constantly that I need to stop is armoring up then attacking or shield blocking then attacking. I have no clue why I always do it.