Cool, nice to see what is actually going in in the "real" end game, I've never made it that far. Dang, too bad that freezing issue is still somehow reachable. Do you remember what happened prior to freeze at all? Looks like you probably were holding some card that somehow got recycled and hence got stuck trying to place card that doesn't exist. Thought I fixed it already but I guess there is still some way to replicate it.
Also, guess I'll need to do some grouping for the skills icons. It'll look much less obtrusive if all those dupes were stacked under one with a count label or something. Any idea what made those empty spaces appear? Are those some of the two colored skills maybe bugged somehow? Not seeing any of those on the list...
Does it still get too easy even with the enemies and the less open levels?