Hi, welcome to this origami video!
This origami video is a great tutorial on how to make a transforming shuriken(ninja disk).
What you need:
2 pieces of paper
This wonderful piece of origami is broken up into units(different parts) so it all slots together when you have made them all. Ninja stars are fun, so pay attention to learn how to make your own. This is a more complex version of a typical ninja star.