Hearthpwn

With the release of TGT came one of the most interesting cards, Dreadsteed.  Initially I ran a rough version of this deck just to add some variety and fun to constructed. Although unconsistent, the times that the deck worked (or maybe I'm just bad) were amazing to play, especially when you have 4-6 Dreadsteeds charging back into battle. Afterwards I decided to tweak the deck a bit in order to make it more consistent. Keep in mind that since these cards are fairly new it'll take some time to see if this deck is even remotely viable, but I can assure you it definitely is fun.

The goal of this deck is to flood your board with as many tokens as possible (preferably Dreadsteeds, but Imps also do the job) in order to combo with Mal'Ganis or Sea Giant. While overwhelming your opponent with 1/1's and removal spells, this deck also tries to combo Dreadsteed with Baron Rivendare to amass 1/1's that are virtually unkillable.

Card Explanations

Sacrificial Pact - Surprisingly this card is fairly useful in this deck. Use it to immediately duplicate your Dreadsteed with Baron Rivendare, as well as to quickly heal from Dreadsteed (for free) or Imps. In some situations, you may combo it with Voidcaller to cheat out demons, usually Mal'Ganis.

Mortal Coil - Very helpful for extra reach when removing minions with Darkbomb, Imp-losion, or your nearly infinite 1/1's while cycling for combo cards. Can also be used on your own Dreadsteed in order to cycle cards in a pinch.

Power Overwhelming - Works incredibly well with Dreadsteed as you almost always have a minion to play it with. Also helpful to activate Nerubian Egg or as extra reach with your 1/1's for trading or lethal.

Darkbomb - Essential card for removal in the early game to deal with two drops that this deck lacks. Many early game minions have 3 or less health, that along with your 1/1's help to maintain board control.

Imp Gang Boss - This card helps give the deck more consistency against aggro decks that can potentially overrun you before you draw combo pieces to begin flooding the board. Also creates Imps to flood the board as well as to combo with Mal'Ganis and Sea Giant later.

Hellfire - Incredible AoE card that helps against aggro, and often has no downside to your side of the board. Nerubian Eggs and Dreadsteeds make you board resilient to this card as well as your opponent's AoE.

Imp-losion - Very good removal, albeit RNG dependent, that creates more tokens to combo with.

Dreadsteed - Possibly one of my favorite cards from TGT. This card is incredibly sticky and extremely hard to remove, allowing it to combo with cards like Power Overwhelming and Baron Rivendare fairly easily. Despite it's low stats, it's often very beneficial to have on board for a little extra reach and to deal with small minions. Comboing with Mal'Ganis is the funnest part about this deck.

Voidcaller - Nice minion that helps you cheat out demons for free, especially Dreadsteed and Mal'Ganis which are rather heavy in cost.

Twisting Nether - Like Hellfire, it often has little impact to your board when used with the numerous Deathrattle cards in this deck. Also has a cool animation.

Mal'Ganis - Very powerful minion when combined with Dreadsteed and Imp tokens. It can be used to surprise your opponent with lethal or to effectively trade with the opponent using the steeds.

Nerubian Egg - Deathrattle minion that deters AoE. Use Power Overwhelming or Hellfire to activate it.

Baron Rivendare - Combos with Dreadsteed surprisingly often. You can sometimes place Dreadsteed on the board before even drawing Rivendare because it almost always stays on the board, and the Warlock Hero Power usually allows you to draw into him relatively often.

Antique Healbot - Helps you stay alive while you assemble cards as well as comeback against aggro once you've won over board control with your removal and 1/1's.

Sludge Belcher - Sticky and helps stall the game to survive and look for cards.

Emperor Thaurissan - While not essential to winning, it definitely helps to reduce the cost of combo cards like Dreadsteed when you can't cheat it out with Voidcaller as well as your other cards with his immediate value.

Dr. Boom - He's a big threat, why not? 

Sea Giant - Another big threat that combos well with Dreadsteed and Imp tokens to make him incredibly cheap. Helps threaten your opponent for more damage when the Mal'Ganis combo doesn't work out.

TGT is still brand new and we're all still experimenting with these cards, feel free to leave suggestions and your experiences with the deck!