I have always thought that zombies were too weak in the game. Their legendary card is just slow giant without skills.
The new card - Draugur is made to strengthen the zombies. He boosts their HPs greatly (by 50 points).
Moreover, he is pretty good controller because he decreases the damage of the foe across by 30 points! I have added several Draugrs in "Dawn of the Dead" level, you can check him in the battle ;)
I plan to add several new zombies in future. If you have any ideas about the new mechanics of characters feel free to write :)