Since the DKs have rotated out, let's reflect on the ones we hated, loved, and were dissapointed by the most.
Loved: Thrall, Deathseer I love the evolve mechanic and Thrall rewards keeping a board alive and the RNG is fun rather than frustrating.
Hated:Frost Lich JainaBasically just a way for Mages to win control matches through constant lifesteal and the hero power made having a board with any low health minions a serious detriment.
Dissapointed: Scourgelord GarroshThe hero power is basically a whirlwind for 2 mana and although the weapon was decent in some matches it is simply not enough for warrior to seriously have staying power.
my favorite is probably Malfurion the Pestilent. he did not feel like a game breaking, super op card that turned the tables the moment he came into play. and he did not make a deck viable. he felt fair, and beatable.
my least favorite is Shadowreaper Anduin. this card was super OP and broken. and the worst part is, the combo was super obvious. everyone who saw shadow reaper thought of combining it with raza. I have no idea how this got past play testing. but it did, and it made the worst meta I have ever seen.