like fox does if you do his final smash and there is an impassable platform on the way to the top of the stage
the events are:
set aerial/onstage state 0-0 or 08000100 with the value 0
09000100 with the value 2
I think it persists until the subaction ends (its been a while since I've fiddled with it) and I did not test this on the ground (if anyone wants to try feel free)
This could be good for shadow cat (from x men) or someone who teleports
would be nice for shadow's up-B to actually teleport through things.