This is a controllish reno hunter deck with Hakkar, the Soulflayer in as a fun late game win condition. Hakkar is not a competitive legendary but I tried him in a lot of classes and deck types and this is the deck that worked best for me. It’s a lot of fun to see your opponent’s deck get more and more Corrupted Bloods.
In general, you want to use your spells to control the board, and Professor Slate is an amazing card in this deck for removal. Another key card is Deathstalker Rexxar, he can win the game by himself or at least stall it and allow your Hakkar synergy to work.
This deck has few minions so it is easier to discover important synergy pieces, the 2 cards that get you minions from your deck are Master's Call and Stitched Tracker. Keep these in the mulligan along with these key cards for your Hakkar, the Soulflayer package: Sphere of Sapience, Seeping Oozeling, and Play Dead and Wyrmrest Purifier if you have Seeping Oozeling. You should also keep Reno Jackson, unless you are vs a slow class like priest, and Zephrys the Great.
Here is how to activate the Hakkar, the Soulflayer deathrattle, you can do it as early as turn 6 with the coin:
If you draw Hakkar, the Soulflayer before you can do this, you can use Carrion Studies to discount its mana cost and then play it and Play Dead in one turn. The worst case scenario is you need to play it on turn 10 by itself, however this deck is pretty consistent at getting the preferred scenario with Seeping Oozeling.
After you have used Hakkar’s deathrattle, you need to make sure you don’t get damaged by it yourself. Your main way to do this is to use Wyrmrest Purifier which will transform all Corrupted Bloods in your deck into random hunter cards. Another way is to use Sphere of Sapience to prevent yourself from drawing them and in fact put them on the bottom of your deck.
So, the general gameplan of the deck is to try to get Seeping Oozeling as soon as you can to get Hakkar, the Soulflayer’s effect going, neutralize Hakkar's effect on your own deck, then control the board and win due to increasing Corrupted Blood damage to your opponent.
I hope you enjoy this deck, and if you have any questions or comments about this deck please comment below.