Huuu, I understood nearly nothing, really, I destroyed an enemy with a fireball, I placed a card on the field, punched and enemy but I couldn't pass my turn or do anything significant… I must be stupid or something.
I don't see the black and white theme, nor the puzzle :/ Maybe it's totally a misunderstanding.
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The goal is to kill the enemy cards in one turn, normally you can reset at the top... I know this game lacks a tutorial, hoped the game will be like "learn as you go" but yeah... failed at that, the black and white theme was a game mechanic added to later levels, there will be portals that go to the dark realm but it's hard to explain.... Thank you for playing though!