Dr. Bähm’s Blood Priest

This deck combines Hakkar, the Soulflayer‘s Corrupted Blood with the ability to heal your hero up with Amara, Warden of Hope multiple times.

The deathrattle minions Crystalline Oracle, Bloodmage Thalnos, Dead Ringer, Obsidian Statue, Twilight's Call in connection with draw cards Northshire Cleric and Power Word: Shield allows you to get you Amara, Warden of Hope quite easily.

Bwonsamdi, the Dead can help you drawing your one mana minions if haven’t done so until turn 7. Otherwise, Bwonsamdi, the Dead can be used to draw one mana minions put into your deck by Spirit of the Dead.

As in most control priest decks, you control the board by Psychic Scream, Spirit Lash  and Shadow Word: Death, Shadow Visions and Shadowreaper Anduin.

Once you have played Amara, Warden of Hope, just get a copy of it by using Seance, Youthful Brewmaster, Zola the Gorgon and Spirit of the Dead. You often end up healing your hero to 40 life multiple times, while you opponent suffers deadly damage from Corrupted Blood.

Hemet, Jungle Hunter and Archbishop Benedictus are key for this deck to work. You will often run out of cards earlier than your opponent, as you have been drawing quite heavily. Try to get a copy of his deck with Archbishop Benedictus, put in Corrupted Blood and destroy your version of it by using Hemet, Jungle Hunter. 

Hemet, Jungle Hunter should be used quite late, possibly after having suffered from a couple of Corrupted Blood. As you have so many abilities to heal up with Amara, Warden of Hope, it doesn’t matter. In the long run, your opponent will blood to death with Corrupted Blood.