Cards drop rate !

[Ray]

The chance is much lower on earlier tiers because it's a lot easier to one-shot creatures on these tiers, and we don't need people doing 50k damage on the first ascension. The game is already 10x easier to progress than it was during it's first month(s) with all these new bonus features, so I think working towards further ascensions shouldn't be too big a problem, leaving more and more reasons to 'want' to progress.