With many players either being new to the game or have a limited collection, there will always be a need for a cheap and effective deck to farm the ladder.
This is nothing new but it can be pretty powerful even against completely optimized decks.

The idea here is to be as agressive as possible while also developping as wide of a board as you can. trade when necessary in order to retain your board as long as possible and then finish the opponent off with Soulfire or a surprise magnetisation with Wargear.

There are many cards that can be crafted in order to improve the quality of the deck namely: 
Leeroy Jenkins: adds more burst damage to end the game quickly
The Soularium: helps replenish your hand to refill a board that has been cleared or make sure you still have steam
Zilliax: Hero power all day long, it won't hurt ya!
Magic Carpet: a second one definitely wont hurt.
Sea Giant: with so many cheap boys on the board, this definitely could make big waves :D

Mulligans: ALWAYS look for a one drop, 2 if you have the coin. Flame Imp is preferred. if you already have 2 1 drops. search for a knife juggler or an evil genius if you either have a Mecharoo OR a Scarab Egg