Hearthpwn

1x Knife Juggler, 1x Necrotic Geist, 2x Deathspeaker, 1x Defile, 1x Tuskarr Fisherman, 1x Summoning Portal and 1x Emperor Thaurissan to start your combo.

When you have all the cards on your hand, you can play Emperor Thaurissan, so cards in your hand are 1 mana cheaper next turn. With Summoning Portal played on next turn, cards like Knife Juggler and Tuskarr Fisherman costs 0 mana.

Play Summoning Portal first, than Knife Juggler to start dealing demage. Than play Tuskarr Fisherman and Deathspeaker on Knife Juggler. After that play Necrotic Geist and second Deathspeaker on him. Finaly (if you have an activator on the board, cos 1 minion need to die on first cycle of the spell) play Defile and see the juggling magic...

Do not forget, that you need an activator on the board (minion with at least 2 health) and your side of the board has to be clear (no minions) cos you need to play 6 cards (7 with an activator) on one turn.

Cards like Darkbomb, Siphon Soul and Antique Healbot helps you to survive. Siphon Soul is especially good in removing big minions of the board and also healing your hero. Darkbomb play with Bloodmage Thalnos on the board to do extra demage.

You need to survive untill you have all the needed cards on hand, and you have many cards you can play just to survive one more turn. Play Doomsayer to clear the whole board (even before the combo). Stonehill Defender will discover you a taunt minion, but choose wisely, you need to get the card away asap to stay alive and not to overdraw. Saronite Chain Gang are also good as shield.

You need only one Defile for your finaly OTK combo, so use the extra one on clearing the board. Now you will need to do some quick math as well. Cards like Imp Gang Boss and Grim Patron are just awesome at clearing the whole board of really big opponent minions and to give you the control over the board (almost everytime at least 1 or 2 patrons stays alive). Do not forget, that you need only one Tuskarr Fisherman, Knife Juggler and Summoning Portal for the final combo, so do not fear to play them.

Also this is the deck, where you have many cards on your hand, so just to spread fear, play Mountain Giant. If you need extra card draw play Coldlight Oracle.

NEVER play combo with Grim Patron, this card is there only if you really need to take some control over the board to survive a turn or two more. Defile has limit on 14 cycles, so you can not deal enough demage.