Basic Insert for Invincible the Card Game and Astro Knight

Invincible The Card Game came with a pretty garbage insert that doesn't hold the cards well and can't fit the official sleeves, so I made a very simple one with almost the same dimensions as the one in Astro Knights and Astro Knights Eternity, since the box is the same size.

Print the piece twice with PLA. No support needed.

They fit in the box tightly and not move around.