It's my first take on a deckguide, so bear with me.
This Murloc list took me from rank 5 to legend.
It is only a small sample size - but go figure it out yourself.
You want to dominate the board in the early game and end the game by turn 10. (Ideally, you'll bring tears to your opponents eyes after dropping Tirion)
Why no Finja, the Flying Star ?
People say, that Finja can refill your board and is a great target for Spikeridge.
Both statements are true but vs. Aggro Finja is too slow and thanks to the Taunt-Heavy Meta aggro lists are running Spellbreaker (which hits Finja 2 times) and the Control Decks run Black Knight.
Control Decks have enough possibilities to deal with it.
Why no The Curator?
Once again I think this card is too slow for the goal that Murloc Paladin tries to achieve. (Bash your opponents head in by turn 10). Yes, it can draw you 2 cards for the lategame, but the winrate of this deck plummets drastically.
Instead I run 2 Cobalt Scaledrake.
As Murloc Paladin you usually have a board by Turn 5. Even on an empty board it generates 8/5 worth of stats by combining it with your heropower. Left unchecked it can win you games by itself. One important thing as well is that it is a dragon. Turn 6 Dragonfire Potion - well good day Priest, fill your board the turn afterwards and gain another + 3 attack.
If this gets any attention I'm sure to write more about it. That's it for now.