Just a year ago, Murloc Shaman would sound like the worst deck ever, but not today. The Rise of Shadows expansion changed everything when it introduced Scargil, a legendary murloc that reduces the cost of all your other murlocs to just one mana.
It allows you to cast a small army of murlocs in one turn and hit your opponent for lethal damage with the help of Bloodlust.
Besides the murloc package, you will find Lava Burst and Leeroy Jenkins as alternative finishers. However, murlocs is all you need to keep winning and climbing the ladder this season.