Hearthpwn

Finally, I made a crazy Buffadin which seems to work for me. I did use few concepts: early game minions with rallying blade (mostly with divine), mid game buffed doppelgangster and late game vinecleaver/Lightfused stegodon. 

I played only 4 games so far Rank 5 -> Rank 4, with 3:1 score. Most opponents don't understand the deck and they seem not to know how to play against it. It is not designed against Priests, since there is no lifesteal minions in it.

I'm feeling unsure about Steward or Darkshire, it seems too situational, but I don't know what could work better (some options would be Tar Creeper, Bonemare, Glacial Shard), or perhaps Patches the Pirate and 2xSouthsea Captain. 

Other options for building this kind of the deck would be include basic elementals Firefly, Tar Creeper, Tol'vir, not sure if that would work, with some late-game silver hand or buffed cards. 

Grimestreet Enforcer seems weak as you are playing a more early game / aggro deck and you will unlikely have enough cards in hand for him to be worth it. Lost in the Jungle might work out better for you, as it is early board presence vs Tempo decks, combo w/your Steward of Darkshire & buff with your Lightfused Stegodon.

It's not an aggro deck with 2x Vinecleaver, 2x Grimestreet Enforcer and 2x Cult Master.

Enforcer is there to buff Doppel/Saronite/any other minion which is in your hand. So most of the time it will buff only a few minions, but even it's one minion with "copy" effect, it has a great value. 

You are right that Lost in the Jungle looks to be missing. My concern was that having too many spells/weapons is negative for Smuggler's Run, but otherwise, this deck simply needs silver hand recruits. I was unsure about Fire Fly [/card]vs [card]Lost in the Jungle. It's not straightforward how to find a balance between buffladin and silerladin in deck building. I think that I'll put Lost in the Jungle rather than Fire Fly tomorrow and play few more games. 

I haven't met any aggro warlock in my small sample, against it, I'd have to push strong (to control the board as he cannot recover), and play around Despicable Dreadlord (not too many 1 health minion at the board), which might be difficult.