While this one was in Smash 4, it was only in the 3DS version of the game. So it's new to me here. It's based on Super Mario 3D Land, one of my favorite games for the Nintendo 3DS.
Like many of the later stages, this one has you moving with the stage. It will transport you to different areas.
With many parts of the stage being so different from each other, you really need to be careful.
While far from my favorite stage, I do like it.