Started the game about 10 days ago, made and used this deck to reach Diamond in Expedition! Please enjoy this poverty of a deck!
Basically the improved version of the deck I used previously to climb to Gold:
The idea of the deck is to buff up your mastery minions and just go face. The fast spells are there to protect you when going face.
Turn 1/2/3 plays are critical for this deck --- make sure you have your redrawing strategy well thought out! Tinker apprentice into 2-drops, or Teething whelp / Artisan into Jack's knife, or (against curse/spell heavy decks) buffed paladin/ghostblade do wonders. Devour is really good on Exalted units, especially after they got perma-frosted.
For market, most of the time I take rampage. Fast spell overwhelm often wins me the game, especially on Rakano Smuggler. The other cards are there for tech situations, e.g., cleaning rain vs curses, steelfang in case the game drags on, fall short for borderlands lookout. Svetya's bravery is a very versatile card. Honorable mention to tinker apprentice -> steelfang for being a good meme.
Most of the rares are smugglers, as my previous deck. The other rare is Tota Colony. I don't know a good replacement for him.
Proof of diamond tier: