I like the concept! Would love to see this expanded with more cards and story or modes. It was a bit too easy though; beat it without losing even once :P Good job!
First idle game I've ever beat... and in an afternoon too. A good game but it does start to bog down near the end. I would recommend reducing the bullet particles to lines (dashed according to speed) for some of the higher attack speeds. Also, many have said it, but it would be interesting to see this continue once you find a use for diamonds.
 "Aisleen"){kind=icon}
 "Cardinal Quest"){kind=icon}
 "DPS Idle"){kind=icon}
 "Auto Turret"){kind=icon}
No problem! It will have a more developed sequel.