Its an interesting premise and I liked the feeling of getting progressively more powerful but I had a few gripes. It was clearly better to get more card draw (usually is) but that meant clicking through page after page of upgrades. then turning around and deleting 100 of them. I would rather have fewer upgrades that persist through the game. It felt like a deck builder but without the vital point of having card draw randomness.
The theme and art are nice though.