I made the Origami Magic Ball a few years ago. I recently chanced upon it in YouTube and decided to make this model again. It is a design attributed to Kade Chan.
The Origami Magic Ball is made from a 2 x 1 rectangle. Many of the YouTube tutorials choose a 32 x 8 grid to start with, but the crease pattern I had from years ago used a 40 x 10 grid. I tried both, and prefer the ball made from the 40 x 10 grid as it makes a rounder ball with more details. You can see the difference in the two pictures below. For a beginner, it may be easier to start with a 32 x 8 grid as it is easier to pre-crease the grid. This is a PDF file of a 40 x 10 grid.
The two Magic Origami Balls are shown in the pictures below.
Origami Magic Ball – 8 levels/ Designed by Yuri Shumakov
Origami Magic Ball – 10 levels/ Designed by Yuri Shumakov
Since the tutorials are easily available on the internet, I will not repeat any instructions here. Suffice to say that the creases must be accurate to achieve a regularly-shaped ball. I used thick paper rather than card, as paper is easier to pre-crease and there’s lots of it to do. But you do need to use stiff paper so that the ball can retain its shape.