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I would argue that the dragon has a hundred ways to play more effectively or reduce the cost of cards, but I don't think anyone, except for low-ranked players, will seriously play with such decks. But there weren't enough such synergies, which is good because there will be more. Otherwise, you look at the mermaid's ability and feel the potential, but then you realize that there aren't any sea creatures to support it.
I'm also happy with the Haven and Dungeon updates. The Dungeon is really nice; I probably used the ethereal form for about 600 hours, maybe once – when I beat one player with Heroes on the first tournament, it was beautiful. A follower for one mana is no longer a useless waste of a slot. And I would even put the Haven in ranked decks, like I do with the frog now, finally putting the Unicorn on the back burner.