Well met! I'm Scorpiosis, known for a few hit cards here but also as an active member of the awesome CustomHS Discord server. For the past year, I have been trying to make a custom Death Knight class. With the recent Knights of the Frozen Throne expansion, I decided to go back and really polish everything up, based on the new cards. Now, I can show you all the final result.

Basic: http://imgur.com/a/qiX4g

Classic: http://imgur.com/a/aIdUL

Adventures: http://imgur.com/a/axpHs

Goblins vs. Gnomes: http://imgur.com/a/JmK1y

The Grand Tournament: http://imgur.com/a/B9Cx0

Whispers of the Old Gods: http://imgur.com/a/R6qkn

Mean Streets of Gadgetzan: http://imgur.com/a/pC3T2

Journey to Un'Goro: http://imgur.com/a/XOwNI

Knights of the Frozen Throne: http://imgur.com/a/tspjN

Kobolds & Catacombs: https://imgur.com/a/TXuwI

BONUS Lich King Encounter: https://imgur.com/a/Vj0zY

You might recognize 8 cards from the Basic & Classic sets. I took the current Lich King tokens and made them collectible cards, by adjusting the Mana Costs accordingly. The class is strong in clearing the board and gaining life, as well as having a strong "zoo" presence supported by the class's Hero Power and death synergies. Reliable card draw tends to be a weak point for the class, but there are quite a few cycle cards. You could essentially say that Death Knight has the strengths of Warlock but the weaknesses of Hunter.

I really like to imagine how another class could work in Hearthstone. Making cards lets me express my creativity in a "productive" manner, and allows me to immerse myself in this fantasy. I hope you can be a part of this fantasy alongside me!