I picture the suriken having less control than the smart disk but more speed and the same damage.
Throw it like a spear keeping full control of your body. While in the air it travels in a strait line but with a magnetic effect that draws it closer to a ft member if it gets within a certain range. The magnetic effect should be limited to a certain margin to allow for error. The shuriken should perform a boomerang effect once called back same as a smart disk or travel in a strait path until it sticks in a wall.

