StretchNutz
Smash Journeyman
I'm about 99% sure that the hitbox that emerges at luigi's feet during the last few frames of his down-b animation (while in the air) is a powerful meteor smash. It is very difficult to hit with this hitbox, as the ones at his hands seem much more prominent, but this could change several aspects of his gameplay. Anybody who cares to experiment please do so and let me know what you discover.