Big spell mage has not enough card draw to make this good. i think this goes into a minion heavy mage with book of specters. Also is 5/5 instead of 4/4 compared to summoner which is a big deal since it doges a lot of removal. This will at least see experimenting might even be meta defining when its good enough. I realy dont like the random part thought couldnt it be a golem with 1/1 stats for each card why must this be another casino card?