Hearthpwn

EDIT: new options being tested. need some new cards to try some other things out, too.

EDIT: current "CUBELOCK" variant. considering more changes to add possible Mountain Giant and or Faceless Manipulator. here is the current list anyway.
http://www.hearthpwn.com/decks/1003849-doom-cube-void-lock-hybrid

Doom-Cube/Void-Lock Hybrid. Control Warlock Deck by Deck_Fiend - Dec 15, 2017 View Deck String Export to BBCode Export to Cockatrice Export to MarkDown Export to Html Clone this deck
Minion (17) 1x Bloodmage Thalnos 1x N'Zoth, the Corruptor 1x Prince Taldaram 1x Spiritsinger Umbra 2x Carnivorous Cube 2x Voidlord 2x Doomguard 2x Possessed Lackey 1x Spellbreaker 2x Kobold Librarian 2x Mistress of Mixtures	Ability (11) 1x Twisting Nether 2x Defile 2x Lesser Amethyst Spellstone 2x Siphon Soul 2x Dark Pact 2x Hellfire	Weapon (1) 1x Skull of the Man'ari	Playable Hero (1) 1x Bloodreaver Gul'dan
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EDIT: variant running the Medivh, the Guardian package. Needs testing also. Description on how these card changes work are bellow. http://www.hearthpwn.com/decks/1006147-speed-ball

The general idea is to keep making more Voidlord minions with Carnivorous Cube, Bloodreaver Gul'dan and N'Zoth, the Corruptor.

This is not the only thing you can do with the cards though, you can duplicate Rin, the First Disciple if you had no Dark Pact to zap her with when trying to play around silence. She can also be brought back by N'Zoth, the Corruptor to add further synergy.

There is some anti synergy as well though in the Possessed Lackey, Mistress of Mixtures and Carnivorous Cube minions being pulled by N'Zoth, the Corruptor, so replacing them with higher value deathrattle cards, or ones without death rattles may turn out to be more efficient. You'd be left with Skull of the Man'ari as a way to recruit your Voidlord though, so some sacrifices must be made. 

Master Oakheart is another built in failsafe for if RNG is shafting you, you have a chance to pull a couple of taunts out. It could have better synergy by having a 2 attack taunt minion, but we don't really want Vulgar Homunculus messing up the Possessed Lackey pulls. more room for refinement if this card is to stay in the deck. 

There's loads more to say, but it's all standard control stuff at this point regarding stalling and using clears to your advantage.

There are new healing mechanics, but I assume everyone knows how the Lesser Amethyst Spellstone cards work, and the value of Dark Pact.

Cntrl-Lock has a ton of tools and we have all the tech to beat everything, although some of it is highly RNG dependent. Using a Dirty Rat to pull out an Archmage Antonidas in exodia mage, or Raza the Chained in machine gun priest, is a great feeling. Sometimes it's worth keeping a slot for something like this, especially if you are facing lots of one deck. Adapt the deck to counter them.

Other noteworthy tech cards are. Gnomeferatu, Skulking Geist and Doomsayer. Arcane Tyrant can be used as further tempo regain when dropping signs and other big spells. This card has great synergy with Rin, the First Disciple and Medivh, the Guardian as this maximises on value from the seals. It Might be worth tesing with this package rather than the Master Oakheart one. In this case you would swap Tar Creeper for Stonehill Defender as the battlecry will no longer be negated by Master Oakheart

It should be noted that with Medivh, the Guardian you could also run Skull of the Man'ari over Possessed Lackey as you can override it with Atiesh before it has a chance to pull Azari, the Devourer in fact it would be optimal to play Medivh, the Guardian before the first seal if at all possible, this is where the card Bloodbloom could come into play. Sacrificing health to get Atiesh loaded and play a seal in the same turn, as well as drop Arcane Tyrant for added tempo.

Probably not ideal though, and not sure which way is the best to go yet. It's cool to have all these options though to mess around with. 

Cairne Bloodhoof would probably be good in this deck. I don't have the card though so just leaving this here as advice to those that do.

That's all I can think of for now. Will edit as this progresses.