Hearthpwn

DOOM! Complete garbage. Kills your Cho'gall.

Twisting Nether. Complete garbage. Kills your Cho'gall.

Dark Bargain. Significantly better then the original. Killing two random enemy minions for 6 health and 2 discards is great.

Siphon Soul. Fantastic. Pay 3 health to destroy target minion. That is insane.

Bane of Doom. Pretty good. 5 health seems like a lot to lose, but if you get Mal'Ganis or any other Demon worth more than 3 or 4 mana.

Demonheart. Fine. +5/+5 is great, but 5 health is nothing to scoff at. That's a sixth of your health, but if you're winning that doesn't matter.

Fist of Jaraxxus. Bad. 4 random damage to an enemy character is not worth that much. 

Hellfire. Worse than original version. Deal 7 damage to yourself and 3 to Cho'gall.

Imp-losion. Fantastic. The card was already great. Now it's even better.

Shadowflame. Amazing. 4 damage to get a great board clear. Too bad it doesn't synergize with Molten Giant, with the damage taking place after you've played it.

Demonwrath. Meh. Still requires a Demon deck. Also Cho'gall will take 2 damage.

Drain Life. Very good. 1 damage to yourself to deal two damage too a target? Now that's value.

Shadow Bolt. Still bad. Still to specific. Move along.

Curse of Rafaam. I guess it's slightly better than before. I mean it's still mediocre, but whatever.

Darkbomb. Great. It's a better Drain Life. The value is pretty damn good with this one.

Demonfire. It's either a worse Drain Life or a pretty good buff. It's fine.

Demonfuse. Still give your opponent a mana crystal. Still trash. 

Corruption. Still sucks. To slow.

Mortal Coil. Fantastic. Was great, now it's better.

Power Overwhelming. Very powerful buff. Makes it easier to go for value trades. 

Soulfire. Lots of damage for minimal downsides. Very good.

Sacrificial Pact. Best card ever. This, in my opinion is the best card to play with Cho'gall. The value.

 Spreading Madness. This one is tough. The RNG can vary so much. I'm leaning towards a no, because their is a chance you and you minions will take more damage than you were willing to take. 

Siphon Soul and Imp-losion still seem like the best power-plays here. Free Soulfire/Power Overwhelming ? ... Meh, seems like there are better things to do with my shiny two-headed ogre mage.

Quote from Jinzua >>

Siphon Soul and Imp-losion still seem like the best power-plays here. Free Soulfire/Power Overwhelming ? ... Meh, seems like there are better things to do with my shiny two-headed ogre mage.

Quote from Zukuu >>

Strictly speaking standard: Cho'gall is not played for his value, but the tempo swings he can net you. The problem is that not all spells that could be decent to play along with him are good on their own. It makes no sense to fill your deck with mediocre spells you wouldn't play without him, since you can't consistently draw both. That means the spell list is actually rather short. The biggest tempo swings you can generate with Shadowflame (on another minion), Siphon Soul and to a lesser degree Shadow Bolt. The later might not see play on its own, although we don't have a Darkbomb replacement yet. Tho, even mid-range decks didn't really play it anyway. So that's actually just two spells and you probably don't wanna run two Shadowflames. Are 3 spells + specific situation enough to warrant to include him? Probably, but it depends on the meta, if gods / big bodies are around and if BGH get's nerfed, which greatly benefits the deck archetype.

I can see him benefit the most in handlock and primarily in mid-range. You have enough draw to get him + a spell and can keep him in hand long enough to wait until you get tempo value from him.

I drafted a mid-range deck with Cho'Gall and C'Thun if you are interested. It's in the warlock sub-forum. Input welcome.

dont forget you can actually play Arch Thief Rafaam 's artifacts with Cho'gall

 You forgot Spreading Madness. He becomes the Maddest Bomber.

Quote from GobGuide >>

 You forgot Spreading Madness. He becomes the Maddest Bomber.

Quote from GobGuide >>

 You forgot Spreading Madness. He becomes the Maddest Bomber.

This list would be even better if you split it into Standard and Wild.

Quote from FortyDust >>

This list would be even better if you split it into Standard and Wild.

Quote from InternetEnzyme55 >>

Quote from FortyDust >>

This list would be even better if you split it into Standard and Wild.

 I might do that. But later, I don't feel like doing that work right now lol. Glad you liked my list though.

EDIT: The only Wild card I see here is Imp-losion. 

... and Darkbomb and Demonheart

The thing with chogall is, if you aren't running Dr Boom, what are you running at 7 mana for handlock or renolock? That is the main reason why chogall has potential IMO.

Quote from raochu >>

Quote from InternetEnzyme55 >>

Quote from FortyDust >>

This list would be even better if you split it into Standard and Wild.

 I might do that. But later, I don't feel like doing that work right now lol. Glad you liked my list though.

EDIT: The only Wild card I see here is Imp-losion. 

 

... and Darkbomb and DemonhearT

Those would be good if you had at least 20 hp. Any less and you'll just kill yourself. They are definitely good if you are sure you'll survive afterward.

The "this turn" restriction is way too punishing. If it worked like Dragon Consort it would have been quite good, but like this... meh. It's too limited/niche. You will have a hard time finding a good moment to play him. Not very synergistic with the current pool of Warlock spells, and Warlock doesn't even play all that many spells to begin with. I don't have high hopes for this card.

The forbidden warlock spell :)