Keeping away from five stars for now since the port has a few kinks to get knocked loose. The game itself is great, highly addicting and superb replay-ability (since it’s impossible to play the same game twice), and the majority (if not all) of the game has been refined to its best state. When the iOS port was announced and subsequently released I was ecstatic, and bought it immediately!
However, as it’s meant for smaller screens and played with fingers, the port needs, in my opinion, some QoL changes to help the UI feel more friendly. First, many of the options in both the main menu and in other locations with small text are too small to comfortably use, as misclicks are all too often. Second, as others have said before, the card selection mechanics are a bit wonky ; to elaborate, there are multiple times I select a card to read it’s use, but then wish to play a different card. Due to the selected card hovering around my card-hand area, it makes it difficult to select a new card to play (especially with cards that can be played just by placing them on the field; those have a tendency to be played instead of de-selecting). Besides this slight nuisances and the occasional sound glitch, the game is amazing performance-wise for a full PC-to-iOS port! Must buy!