Bone Wraith is really just there as an anti-aggro tool, whether he needs to be included or not kind of depends on the amount and power of aggro decks. Maybe it should be replaced by Oasis Surger. Zephrys the Great definitely clashes with double Moonfire and BEEEES!!!. Maybe that's another reason to cut out the second BEEEES!!!.

I don't think it would be OP, but it does actually sounds quite strong! How would you build the deck around it?

Singleton Double Combo Druid!

I feel like RandomGuy's version is a lot better, since it plays more cards which can actually use the Hero Power. Playing a Quest is a pretty hefty cost (starting with 1 fewer card and losing your turn 1) and Neutral and Paladin Reborn cards in general don't seem very good. If you're gonna dillute your deck with them you better have some mighty strong pay-off cards to take advantage of the Hero Power.

You can put both in your deck, and both would start in your opening hand. However, like Yusuke said, you can only have 1 in play at any one time.

While I agree Acornbearer would be a good card in the deck, turn 1 Acornbearer turn 2 quest would be a better play.

Zephrys the Great is an awesome addition to this deck :D

Why no Vereesa Windrunner for potential extra spellpower?

Stuff like that is exactly why this deck excites me so :) There are so many flexible ways to potentially build and play the deck. Those are the best combo decks, like Patron Warrior. Way better than the combo decks which basically just work towards 1 combo and that's it. Those decks are basically the same every game.

How would you build that greedier version with second Wrath/Crystal Power?

The second! I included a line about it in the guide. Double Moonfire is needed for the Malygos combo (and you don't want to Elise the Enlightened before drawing them both anyway), while BEEEES!!! is just such a versatile card for removal, Linecracker combo and Ticket Scalper draw combo that I felt it would be worth the decreased activation chance for Elise the Enlightened. I'm not 100% sure about double BEEEES!!!, but I feel like double Moonfire is essential.

As more cards from the new expansion get announced, one deck in particular interests me more than any other: Singleton Combo Druid. The things I like most about the prospect of this deck are the various packages you can include in it, and the various possible win conditions. Malygos Combo, Linecracker Combo, King Phaoris boards, and many others that I have not thought of. The amount of draw is a complicated question that I feel can't really be answered completely until we get to play with the deck itself. The decklist posted below is my attempt at building it, with justifications for the different packages included in the guide. What do you guys think? How would you build this deck? Does it have any chance against Warrior and Mage?

After seeing some of the new cards, I decided to cut Alexstrasza, since King Phaoris and Siamat seem better fits for the deck and also provide enough targets for Juicy Psychmelon.

Alexstrasza is there to help reduce the damage threshold against warriors, to allow combos with some missing pieces and to give Jepetto Joybuzz a higher chance to pull Malygos, since you won't necessarily pull both with Juicy Psychmelon. I don't think it will be essential though!

I'm not too sure about all this secret synergy with so few secrets. I'd either add more secrets or remove the secret synergy cards, since cards like Commander Rhyssa and Sunreaver Spy are not worth playing with such a small chance of having a secret up.

I think the upside of giving all your 1-drops +1 attack and Rush is worth the downside of it becoming a dead draw if you draw it after playing Prince Liam. It's just too good of a synergy card to not play with this many 1-drops.

Malygos is essential combo, so why exactly are you not sure about him? [Hearthstone Card (Jeppeto Joybuzz) Not Found] is indeed a more debatable choice, but he has very few bad targets to hit and if he hits the right one it can lead to some insane combo's. You're guaranteed to draw him with Juicy Psychmelon, together with either Alexstrasza or Malygos, which increases the chance that he draws the other one. Although maybe he should be replaced with something more early-game, or another 8-drop to draw with Juicy Psychmelon.

It seems like 2x Kill Command, Quick Shot and hero power would be a better finisher after Alexstrasza, since it can bypass taunts and doesn't require you to build a singleton deck. It only requires 1 extra card, but Kill Command and Quick Shot are also more able to be used outside of the combo than Brann Bronzebeard or Dinotamer Brann.

The Fresh Prince of Bel-Air

This card is insanely good. You want to play Lackey cards in your Zoo deck anyway, and now you're getting a free 5/5 after having spent their battlecry already? This will definitely be played, and I suspect we're gonna see another Lackey generator this expansion, warlock or neutral.

FYI: Master's Call will never draw 2 of the same beast, since it checks for discover first and discover never gives the same option twice. So it will, in the deck's current state, always draw Scarlet Webweaver and King Krush. I think adding the secret package will be fine, just play Subject 9 before playing Scarlet Webweaver.