Warp Spiders

A model with a Warp Jump Generator may moves up to 12" in the movement phase, ignoring all terrain during the move, but may not finish the move in impassable terrain. 
The unit may make a second jump at the start of the assault phase. They cannot use this jump and charge into combat in the same turn. This second jump moves 2D6" in a nominated direction, and if a double is rolled one member of the squad is removed as a casualty.
The unit also advanced and falls back 3D6" after close combat, ignoring terrain as normal.