Hearthpwn

Seems good.
This and Elise I think accomplish kind of the same thing. 
They both allow you to make a deck with nothing but removal. 
This guy is a bit more inconsistent though because you have a set number of legendaries and it has to live a turn. 
This does help you not fatigue in the super control/fatigue meta that exists in Kripparian's mind only as well.

This card may be really overrated now that I think about it. Does a 1/1 body matter at all. A lot of times it does not. If the 1/1 body gets pinged off or draws Warrior another card, or gives Zoolock another token. When you really think about this card is sometimes: Do something good for opponent, get a random spell , essentially pay one more mana for it. lol.

I could see it in Reno and Random mage. Maybe some unforeseen mage, maybe even some new version of Tempo Mage. 

I don't think  Tempo Mage as it is now wants this card. Tempo mage has WAY too many amazing 1/2 drops to choose from already, and this already leads to a situation where you dump your hand too fast. Sure it doesn't matter what spell you get as much in Tempo Mage but would you trade a spell you know is good for a 1/1 that generates a random spell. I think you really would not.

Would you swap Arcane Blast which has great synergy with the new +1 spell dmg 2 drop and Azure for this card? I don't think so. 
Would yo drop Acolyte of pain for this card? 

I was watching Firebat review this card, and he thinks it will see play and be very good in Tempo Mage. With the possible scenario of getting Leeroy or Doomguard from it doing ten dmg and winning the game. 

This could but probably will not replace Novice Engineer in Freeze Mage. 
It could be a WAY better Novice if it draws you another Burn Spell or a 3rd Ice Block that you desperately need. 
However, it will not do that consistently, and it delays Alexstrasza/Emperor Thaurissan a turn.
Freeze mage lives and dies by how quickly it can draw out its combo and this card does not really help it do that. 

It will see play just not in Tempo or Freeze. 

Slightly better Kodo for Dragon Control is a good card. 
Mostly the problem is the mana cost. 6-mana is where some of the best control cards in the game live. 
It will prolly not see play in the current meta, and I don't think it is good enough to change the meta. 

Dragon Paladin needs early drops to be viable it could run this, it is worth a try. 
Dragon Priest needs Power Word tentacles to give +2 less health, +1 spell damage and cost 3 less mana to be viable again
Dragon Warrior wants to hit the face real hard 

Lets compare this to Nourish: 

Nourish would not see play if druid had better card draw. I know that. You know that. Because before standard that is the world we lived in and Nourish did not see play. I can even say if Druid had exactly a 7 mana card with 10 stats that drew at least 2 cards Nourish would not see play because again that is the world we lived in just a few months ago. 

Nourish + Fandral is crazy strong and can win the game it also almost never happens, and because it super rare to play Fandral have your opponent let Fandral live, then have and play Nourish it is not a justification to keep the card, I think I have seen that happen once and it wasn't even to me it was to a streamer. Lets stick what usually happens because consistently is very important especially on ladder. 

7 mana 4/4 draw three cards v. 7 mana 4/6 taunt draw three cards
If you had seven mana and play Nourish with the most overpowered two drop in the game  Millhouse Manastorm. Let me be EXTREMELY generous and pretend like Millhouse's insane downside does not exist. That is still 7 mana draw three cards put a 4/4 body in play. This card if you run a Sir Finley which isn't insane is 7 mana draw three cards put a 4/6 body with taunt in play. Even if you just run Savage Combatant or Raven and Ysera or Azure Drakes which are all very good cards you would totally run that is still so much better then Nourish it is actually insane, and keep in mind this is giving Nourish way more credit then it deserves because your 2 drop would not be a 4/4 it would be Darnassus or Wild Growth or Wrath. Also that would take two cards and bundling cards always makes them way better. 

Nourish is not a good turn 5 play 
Nourish is not a 5-drop. You play Nourish when you have ten mana and you are top decking and you pray to rngesus that you get a decent 5 or 4 drop to play with it to make up for the INSANE amount of tempo you just lost. Spending your turn 5 drawing three cards and developing nothing will almost definitely lose you the game, unless your playing trash tier ranked but I get wins with total bullshit decks so lets rank 10 or below you spend turn 5 Nourishing for cards and you just lost the game almost every time. I can see being a legit play if you have trash in your hand and a really strong 8 or 10 drop. Nourish for mana to play something next turn because you kind of need to but that still puts you in the situation where you used your decks main card draw for ramp and if your opponent plays death, or entomb, or hex, or polymorph you will be left with nothing but your own dick in your hand and praying to rngesus to get you out of this horrible position you put yourself in. 

Targeted draw is better then random draw 
You can draw exactly Ysera if you want, You can draw exactly Savage Combatant if you want. You can make this card draw me not just two cards but two cards I would really like to have in my hand. Nourish can lose you the game on the spot with a 5 mana draw innervate, wild growth, and second Nourish if your insane enough to run two Nourishes but lets be honest almost no one is insane enough to run two Nourish. 

Enchanted Raven can be anti-agro 
This card could make Raven better because it pulls it out of your top deck rotation. Mulligan for your first Raven. You do not want to top deck the second, play this guy, and it pulls your big ass Dragon or your card Dragon, and your raven now you have a good card to play next turn and one less shitty card to top deck next turn. Druid also has access to two of the best early game minions in Hearthstone now. Living Roots and Enchanted Raven. I doubt many will run both unless aggro really gets really out of control but Dragon priest did run Zombie Chow and the 1-drop priest dragon for a bit to take on aggro. Aggro does rek the hell out of Druid in general so it is worth a try for sure. 

There are probably more reasons but that is all I can think of for now. 

 Discard is a crap mechanic so that deck will never happen, but I could see Zoo replacing Void Walker with this guy. 7 mana This guy, Doomguard, draw PO for surprise lethal will def happen at least some of the time. Even just This guy Doomguard, replace two cards you don't want with two you might at this point in the game. seems decent. 

Also now that I realize you just plug this into Zoo and make it stronger. I no longer think the card is bad. Now I think the card is cancer. Zoo REALLY does not need to be strengthened. Why even have standard part two. Why even have standard part one was Haunted Creeper....I mean, Big Bad Granny, 7 stated death rattle for two mana, where have I seen that before?

One of these is bound to work

Shaman
Barnes for 4 mana, Draws Malygos: 6 mana Lava Shock x2 Lightning Bolt x2 = 30 dmg 
Mage
Barnes for 4 mana, Draws Malygos: 6 mana Frost Bolt x2 Ice Lance x2 = 34 dmg
Druid 
Barnes for 4 mana, Draws Malygos: 6 mana Living Roots x2 Swipe x1 = 27 dmg + 6 dmg board clear
Priest 
Barnes for 4 mana, Draws Malygos or Prophet Velen: 6 mana Embrace the shadows x1 Mind Blast x2 Flash heal x2 = 40 dmg 
Rogue 
Barnes for 4 mana, Draws Malygos: 6 mana Eviscerate x2, Sinister Strike x2 = 34 dmg 

I think Barnes Emperor T could be good enough. Prolly more Freeze mage, but sure lock n' Load. Guaranteed 2 ticks to card reduction.

Im calling it. This card will be in EVERY ramp druid deck. 
Mostly because Nourish is trash, and the choice between this and Nourish is ez pz 
Ramp prolly won't start running Murlocs.

Azure Drake, Ysera, possibly Chillmaw
Enchanted Raven and Savage Combatant 

Same stats as haunted creeper. 7 stats on a death rattle for 2 mana. 

Big Bad Wold: 1/1 -> 3/2 = Deathrattle 7 stats for 2 mana
Haunted Creeper: 1/2 -> 2 1/1s = Deathrattle 7 stats for 2 mana 

Haunted Creeper at least somewhat op. Big Bad is basically Haunted creeper. Maybe even worse because the Wolf is a beast unlike creeper. 

Yah that is what I thought too. A two mana death rattle card that has a total of 7 stats. Where have seen that op nonsense before. Oh, right Haunted Creeper. Why even have standard. lol. 

I would be cool if it got used like creeper sometimes got used to control early aggro for a control Hunter. That will NEVER happen, thought. lol. This asshat is going face with an Abusive Sergeant buff. Then he is going face again after you kill the first half. 

This card with living roots could give Druid some of the best early game in Hearthstone, which will really help the class across the board in dealing with aggro. 

It is definitely a very good card. Reno mage sure. Would Tempo mage use this? Would Freeze mage use this? Maybe. We will have to see how consistently you get a good spell.

This could replace Novice engineers in Freeze mage, and if it draws additional survival and burns consistently it would be really good, if it doest bad, maybe not really bad though.

Tempo mage doesn't give too many shits what spells it gets, but it already burns through its entire hand super fast, so it would be hard to but another low cost in there.

Brann is interesting. There could be a new meta coming. Brann, Faceless Summoner, Raving Grimoire. Prolly need more battlecries then that, but those are strong enough with Brann and by them selves to want to build a deck around.