Rather then go for a strict Mech or Murloc theme, this list attempts to fuse them thanks to Nightmare Amalgam!
This has some small chance at being okay because, as a whole, Murlocs lost their best 1 drops, and the current standard mechs have very underwhelming 2 and 3 drops. Theoretically they compliment each other.
Important cuts from standard Murloc decks (the very few that are played, that is) are the Knife Jugglers and Righteous Protectors. They may be worth shuffling things around for, but in this initial build I wanted to focus on the Murlocs and Mechs.
Kangor’s Endless Army was also thrown in essentially as an afterthought; since this deck has a very small mech package and over half of them are magnetic, the chance to get some good resurrections is probably higher then in more mech-heavy lists.