I find Mauve Manticore has good replay value. I've played five or six times. As I just mentioned elsewhere, I find it a nice change not to have to deck-build. #1 is pretty easy, IMO. There are lots of options other than freeze. Yesterday I used Rockfall on the ogre and the door. He didn't actually move toward me, but if he had, I had a Force Bolt to push him back. If worst comes to worst, he can usually be tanked for a turn. #2 is more challenging, but well-balanced, I think. You can lose through bad luck, but if you are careful and avoid too many chops you should be okay. What you want are frenzied vampire attacks, really, and hopefully some help from the ogre. At least that's what I hope for. Not sure the first-round draw even matters that much, I'm happy if I get a few good cards but it doesn't really start until round 2 anyway. #3 is obviously just an arcade challenge, but it's quick and fun, and a nice way to finish off. It could be frustrating if one's connection is poor, I guess. I don't believe unlimited replays are needed. The difficulty level is lower than the high-level standard maps IMO.