My ever-changing Murloc Shaman decklist that I update every expansion if it contains new Murlocs.

Not too competetive, not too bad.

Since it is fairly simple to play, I don't think a guide is necessary but if by an off-chance you need one here is a quick one:

-Play Murlocs.

-Finish quest.

-Buff Murlocs.

-If run out of Murlocs, play Big Murloc.

-Hopefully win.

Also some insight I like to give about the deck:

-This is not the deck you are looking for in order to defeat Big Priest, so if you don't have the dust, skip right on.

-This probably IS the deck if you have all the cards and looking for a deck to complete your play X amounts of Murlocs or play X amount of cards that cost 2 or less while having fun and against the right deck, win but DON'T craft this deck if you don't have an abundance of dust lying around or if you just simply don't have the cards since it won't win you many games. 

-Against control classes with backbreaking-ly strong AoE spells if you face them a lot, consider adding Coldlight Seer and remove any card you deem sub-par.

-Against aggro decks if you face them a lot try removing slow cards like Brann Bronzebeard, Storm Chaser, Alexstrasza, The Curator, Finja, the Flying Star and even maybe consider dropping the whole Everyfin is Awesome-Gentle Megasaur package and add more small drops and drawing tools like Ice Fishing

-And don't forget to take everything I say with a grain of salt since I don't know jack about deckbuilding and hardly anything about the game itself :P

(Also you can give insights about your changes to the deck which I appreciate dearly)