This is less of a serious theorycraft and more of a PSA that Demon Hunter now has two Murlocs in its class. We're just as confused as you are.

Metamorfin and Furious Felfin have the ability to gain extra stats, and they're cheap enough to play well with the Neutral core of Murlocs. We're particularly interested in Fel Barrage as a cheeky way to find lethal if we put enough pressure on our opponent. The rest of the deck is a combination of cheap ways to deal damage and cheap ways to draw cards.