Hearthpwn

I am having very great success with this deck as i was able to hit rank five from rank 10.

Please give me some feedback to help with any questions about this deck.

(Like card substitutions, mulligan, etc.)

Much appreciated! 

Bloodmage Thalnos-You could swap it out for a loot hoarder or a kobold, in my opinion a kobold is much better as it could be used to combo with other spells like the fan of knives to counter the aggro, or to just get that extra boost in spells.

There is really nothing to replace tomb pillager as the coin it drops is crucial to have a successful combo with gadgetzan.  

Questing Adventurer could also be used as a bait, as your opponent might think it will be a serious impact next turn, especially if you will be playing your gadgetzan.

(Note that i placed a bloodmage thalnos because I have that card and not Edwin, but Edwin is a much better legendary for this deck.)