Morphing a mesh between more than two shapes I want to morph a cube into a sphere, and the sphere into a cone, all in one animation.

Unless I am missing something, shape keys allow objects to go from A to B and back to A, or A to C and back to A, etc.

What is the most natural and efficient way to go from A to B to C?
You can set Shapekey B to depend on shapekey A, and shapekey C to depend on shapekey B.