also, what happened to the energy refill cards? were they removed or just made much rarer?
Much rarer.
I never saw one in a few hours of play including one infinite run that I ended at level 54, I think they're just gone
No, I have seen them. It is considered a ‘rare’ card, meaning that it appears on a much rarer basis, but you can get them from locked cards.
Maybe you can only get them from locked cards, I never took those myself
