The game doesn't appear to transfer data between screens in firefox (probably related to the game being several html files, while most html games on this site are one), which seems rather important to fix. It should definitely also start you with enough cards in your deck to be able to try battles immediately, instead of having to wait about 30 minutes to play the actual game (assuming you spend your initial cash on automatic cash generation and don't manually press the mining button, or switch to another tab which freezes the game, or get more than 1 duplicate). Also, it would be nice to have the to deck button in the collection screen switch to a remove from deck button when the card is in the deck, instead of having to switch between the deck and collection screens when putting cards in your deck (honestly, I feel like just adding an option to filter by cards currently in the deck to the collection screen and putting the cards in deck information on the top might make more sense than having them be separate screens at all). Being able to choose what to sort (order by strength, beauty, alphabetical, order received etc.) in addition to filters on the collection screen would be useful. Also, the text for whether a card is in the deck in the bottom right corner (which feels redundant with the to deck button indicating their position either way) isn't translated, and the UI doesn't update to reflect gold amounts until you switch screens (particuarly notable on the mining screen). Besides UI feedback, the setup for the game itself seems fine, but would probably be more interesting cards had more variance between their stats, but at least at lower levels I don't think I've seen a significant gap between the highest and lowest stat on a card, and adding larger gaps could both make gameplay more interesting and also make characters more reflective of the way they function in their source media. There could also be a more obvious way to display which stat is currently targeted (possibly highlighting the button for the selected stat) instead of having to read through the log every round, and displaying how much focus the enemy has left by your focus button could also be helpful. Having a way to check what abilities do during around (probably a mouseover tooltip) would also be very helpful. Overall, I could see this being interesting, but having a clearer UI and especially not having an excessive barrier to entry would both help the game a lot.