Time will tell if Murgur is a passable control finisher; given the pool of available murlocs, I'm highly skeptical. Even though they get Divine Shield, hoping to high roll for another Murgur isn't a great place to be in.
As far as theme goes, I'm tired of murlocs, especially in Paladin. This could have been an awesome Draenei or Human hero, but instead we just got some random murloc with cooking implements attached to its hands. Not thrilled about opening this card, even if it does turn out to be a good finisher for the libram deck.