i wonder if they will ever make a sandbox mode OvO then you could test builds when you go for a real run
Sure, I'd consider something like that. It might be a bit tricky though, since in addition to giving access to every card, we'd have to give all crystals too, as well as the relics when those are in, since they can affect synergies quite a lot. I'll give some thought to how it could work though, thanks for the suggestion!