Floor_RaiseAndCrush
From ZDoom Wiki
28:Floor_RaiseAndCrush (tag, speed, crush [,crushmode])
tag: Tag of affected sector speed: How quickly the floor moves crush: Amount of damage to apply crushmode: Sets the crushing mode (development version only)
Raises the floor to a height of 8 units below the ceiling and applies crushing damage to anything standing on it. If tag is 0, then the sector on the line's back side is used.

