Hearthpwn

This deck has helped me climb a lot because of the amount of burst. 

Dark Pharaoh Tekahn with all the lackeys provides constant pressure that many cant handle. 

Darkmire Moonkin is used to provide an extra damage with your burns cards for less mana. At turn 10 its an easy 12 damage burst. I like using this instead of Malygos because at turn 10 you can only do 9 damage. This card has helped me finish countless times. 

I do not have Alexstrasza because i have realized its too slow and by the time turn 9 happens they should already be nearly at 15 health or lower. At turn 9 i would much rather have a wider board than just 1 8/8 that they can deal with so at turn 10 i can do the 12 burst. 

High Priestess Jeklik I like this card just for the heal against aggro. Although we are an aggro deck as well, we still want be able to have extra healing/defense against other fast aggro decks as well. I know the discard mechanic isnt being used but it has helped me a lot thus far. 

I dont have EVIL Cable Rat because this is not STRICTLY a lackey deck so i think the stats isnt worth it and i dont want that many 2 drops in my deck. I know there are not many dragons but with the amount of lackeys you will have it is nearly certain you will get 1 or 2 dragon lackeys to make up for it. 

1 Hellfire for the extra burst and board clear just in case you dont have another dragon for Crazed Netherwing.

1 Voodoo Doll for that pesky taunt or big minion you cant get rid of.

Only 1 Plague of Flames because i dont find many situations that i want to get rid of my board instead of going face unless i am totally outmatched on board. 

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MULLIGANS/MATCHUPS

*Always keep 1 or 2 of these: Mountain Giant and Twilight Drake and Dark Pharaoh Tekahn

Aggro:(Warrior,Hunter,Rogue, Warlock): Keep Crazed Netherwing or Hellfire.

These classes cant typically keep that onslaught of your giants and drakes. They might be able to get 1 of your big cards but not consistently unless they have a god hand. Hunter specifically i have troubles with because of the lepergnome sidequest. Zillax and High Priestess Jeklik should help with early on as well. 

Unless they have huge minions keep going face. Your goal is to get to them to as close to 12 health for your Darkmire Moonkin combo at turn 10. 

Priest: Keep Voodoo Doll or Ironbeak Owl

If you have a giant or drake these cards will help with the turn 5 Shield of Galakrond so you can keep hitting face. I have realized they cant deal with constant threats once again though if you have a bad hand and you cant consistently pressure them  you will lose. Throwing a Leeroy Jenkins to get them lower health isnt a horrible idea as well since the minions he spawns can screw with Priest resurrects. 

Shaman: Similar to Priest with the turn 5 Shield of Galakrond but the one problem other than that is Dragon's Pack. I like to have Dark Skies against this. Once Shaman uses their Galakrond that is when i like to use Plague of Flames. This matchup is harder than the others because of the amount of taunts and freezes and also having Shudderwock. All i can say is keep hitting face and provide pressure with your lackeys once transformed and your giants/drakes. 

Mage: I also have issues with Mage because of the amount of board clear and freezes. Keep hitting face unless they have big minions. Clear those with Plague of Flames then continue the rampage. 

Druid: This is a hit or miss to go against. If they finish their quest prior to to you pressuring them its really hard to win. Luckily with Dark Pharaoh Tekahn you can provide pressure even when they keep healing and have 6/6 taunts. 

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Words of wisdom: Keep hitting face to get as close to 12 health.

It is ok to use 1 or both your Nether Breath if you need to survive and you know you can burst them down with your other burst cards. Most classes have no healing other than Zilliax. 

 There will be games where you either A) dont draw Dark Pharaoh Tekahn or B) its too slow. Its ok if you cant summon it right away. Wait until you have a bit more mana you can throw Dark Pharaoh Tekahn and then the lackeys afterwards.

I like to use EVIL Genius on either Voodoo Doll or Bloodmage Thalnos to get rid of a minion and/or extra card draw. Just make sure your hand size is small enough  you can fit 3 cards. This will also help with your cheap Giant or healthy Drake.

 I would love to hear suggestions of what to put in or take out. If you have a suggestion and i have thought about it, i will explain why its not in there at this moment. I have never made it to Legend so with your help maybe WE can do it together!

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EDIT

I am still floating between 3 and 4 and Rogue is/can be my biggest problem. Its really a 50/50 with them. It ALL depends on how good their luck is from getting 0 mana cards. If anyone has any "advice" on it please let me know. Other than that i have been having good luck with the other classes. Hunter CAN be an issue but it hasnt been horrible