Hearthpwn

The most important part is to have your hand cleared of stuff you dont want to get reduced by 7 mana like Doomsayer and Giggling Inventor

Combo

Play Drakkari Enchanter and Dreampetal Florist together to hit one or two minion cards. You are gonna want to aim to reduce Malygos Faceless Manipulator Flobbidinous Floop

Worst case scenario is that you reduce Flobbidinous Floop by two times but thats not the worst thing ever! If that does happen you can still play a 9 mana Malygos then a free Flobbidinous Floop Malygos and after that you 2x Faceless Manipulator it and drop 2x Moonfire for a total of 34 damage

On average you are gonna maybe hit two of your crucial minions with the mana reduction and if thats like Flobbidinous Floop and Faceless Manipulator then you got yourself a 44 damage combo with 2x Moonfire

Play Malygos it either dies or survives then you play a free Flobbidinous Floop Malygos and a free Faceless Manipulator along with Gloop Sprayer and you got in total FOUR Malygos all for 8 mana. If you want to you can also throw in your hero power for 1 damage or 3 damage if you got the death knight hero power.

The only class that could probably survive this crap is CNTRL warrior but if that does happen their decks are usually too slow which gives you enough time to reduce more stuff in your hand to gain even more damage!

Survival

 Biology Project IMO is king here because it allows you to ramp up much faster to your deadly cards. I don't think its gonna give the other player that big of an advantage because if its aggro they'll empty their hand even faster which is gonna result in them being out of cards while you have about 9 different cards to draw more cards to answer the board.

With cards like Swipe Branching Paths Starfall Spreading Plague Malfurion the Pestilent Ultimate Infestation Doomsayer Giggling Inventor I think you will be able to survive pretty damn good but only meta will tell what will need to be switched around.

Feel free to suggest any advices how i could improve the deck!