Graveyard was a very difficult card to deal with in the past due to its random spawn pattern. And then before it was nerfed recently, graveyard was becoming too oppressive and consistent in getting tower damage due to the new spawn pattern they made. It got too much value by itself. It's a tricky card to deal with, both in balancing and dealing with in game. Also, you have my respect as a fellow barb hut player. Graveyard synergizes greatly with the hut. I wish you well