King of Tokyo Evolution card holder

To hold the 8-card Evolution decks for King of Tokyo (found in Power Up! expansion). I made this with 9 slots, which includes the Halloween and Power Up! expansion creatures.

There is a top to this which fits perfectly over the cards, but there is no attachment for the two halves. I use a rubber band when it's in the box. The 3 hearts represents the roll you need to draw an evolution.