Hearthpwn

 

GUIDE:

2x Sacrificial Pact

Very good in order to get your big demons out faster against aggro decks. Otherwise you can use it on Voidwalker for cheap healing and to get hand space. Obviously broken against other warlocks. Keep it in your opening hand if you have a Voidcaller and/or Sense Demons against aggro.

2x Kobold Librarian

Always keep this in your mulligan. Play it whenever you can. It's a free lifetap on legs. Insane card.

2x Mistress of Mixtures

Always keep against aggro. Otherwise you can get easy handspace with this in the lategame or you can keep it as a bridge for defile clears.

1x Mortal Coil

Just a cheap cycle. Keep against aggro if you already have a good hand. Against control feel free to even use it on your own minions.

1x Bloodbloom

One of the combo pieces that you need to reduce with Emperor Thaurissan. Otherwise I didn't really find a use for it. For example if you need to use it with Twisting Nether against aggro you are usually too low anyways.

1x Bloodmage Thalnos

Just a nice tool to have. The spelldamage only matters with Defile and Mortal Coil. Just play it if you have spare mana in order to cycle.

1x Defile

Your main boardclear against aggro. Keep against Paladin, Rogue and Shaman. Against control you can often just play it on an empty board to get handspace.

1x Zephrys the Great

Very flexible, but never really a powerhouse. You can keep it for secret/weapon removal against mage, or board clears against aggro. Otherwise just play it when you can do something for board control. Sometimes I even played it as a vanilla 3/2, just to fight for the board. Just don't be too greedy with it and always keep Bloodlust in mind when you have a couple Voidwalkers laying around.

1x Dark Skies

Insane new card. Works against wide boards and single minions. At 3 its cheap enough to be played whenever. In combination with Bloodmage Thalnos it clears pretty much every board.

2x Sense Demons

The main draw to get your Voidcaller combos. Definitely keep in slower matchups, against aggro its a bit more difficult, although its probably right when you already have Sacrificial Pact or Voidcaller. The secondary effect (getting the 1/1 imps) is not useless, as you can keep them as blockers for your opponents Dirty Rat. Just be careful to not mess up your demon pool.

1x Blastcrystal Potion

Emergency removal for big early game minions, for example a magnetized mech or a Flamewreathed Faceless. If you have 10 mana, the downside doesn't matter, but before that you really have to plan out your curve. I wouldn't replace it with Kazakus, as you can't play that on turn 4.

1x Cataclysm

One of your combo pieces. You don't need to reduce it as it only costs you health (which was never a problem). Otherwise you can't use it, as the cost is just too high.

2x Voidcaller

The most OP card in the deck and your win condition against aggro. Try to get this on Voidlord as Mal'Ganis is quite easy to remove. You can also play this as a bluff and try to draw into your demons later.

1x Antique Healbot

Just a nice little healing in the middlegame with a body. It pays back the health you lost for lifetaps.

1x Zilliax

Yes, this card is also in here. Just useful to have a removal/healing combo. Keep in mind that Antique Healbot is a mech.

1x Emperor Thaurissan

Against control, you need to reduce Bloodbloom and Mecha'thun with this. Against aggro, you can play this on turn 6 if you are not under pressure. It's often worth it if you reduce a big demon or Bloodreaver Gul'dan.

1x Reno Jackson

There are a couple of matchups where you don't need this. But if you do, it saves you the game. Especially against a mage with Aluneth up or a rogue that played Myra's Unstable Element. Only keep if you have some of the non-searchable duplicates against aggro.

1x Lord Godfrey

Just another boardclear against aggro/midrange.

1x Valdris Felgorge

A lot better that The Soularium as you can play this proactively. Then it helps against overdrawing from coldlights and allows you to hold more Dirty Rat blockers.

1x Twisting Nether

Saves you from big boards. You will need this against mech decks and big priest for example.

1x Mal'Ganis

Not as good as Voidlord, but it basically has taunt and puts a lot of pressure on your opponent. And free lifetaps are also not bad.

2x Voidlord

Your main protection. Try to get it out as early as possible. Just don't play it right before your combo, as the deathrattle completely destroys it.

1x Bloodreaver Gul'dan

THE powerhouse of the deck. If you play this against aggro, you usually win the game on the spot. Against control its just nice to have, just don't play it too late as you will need to get rid of your Voidlords.

1x Mecha'thun

The reason you play this deck. Reduce it with Emperor Thaurissan and beat all those greedy control decks!