This deck is based on a Standard deck made by Chump.

https://youtu.be/htFVkdhVBkQ

The focus of this deck is to get Embiggen played ASAP on cheap Mech minions. Some of them able to remove the cost debuff. In Wild, I added Mechwarper to help with cost reduction and added some more card draw (I found this deck suffered from not getting enough minions in hand fast enough to warrant the Embiggen). And I added Void Ripper for a surprise game finisher, since Mechs have a general high numbers in Health.

Have fun!

Embiggen: Backbone of this deck. Mulligan hard for this.

Target Dummy: What's better than a 0/2 Taunt Mech for 0 mana? How about a 2/4 Taunt Mech for 1 mana? Or a 4/6 for 2?!

Hot Air Balloon: Good cheap 1 drop.

Skaterbot: Lets not Rush things. On second thought, lets Rush it.

Crystal Merchant: Decent card drawler.

Galvanizer: Counters the cost of Embiggen.

Mechwarper: Ditto.

Upgradeable Framebot: Need something to put your fridge magnets on.

Acolyte of Pain: More card draw. Extra large isn't bad either.

Bronze Gatekeeper: Good Magnetic buff. Better when Embiggen.

SN1P-SN4P: Second required card in Mech decks.

Void Ripper: Turn all that flabby Health into Attack muscle!

Branching Paths: Card draw and buffing.