I think you should be able to control were nydas worms go underground, l like when you select one and burrow it you can move around on a whole new underground map and pop up anywere were there is creep aswell when you surface you should be able to load up on units and when you surface do dmg to units and buildings around you and unload your units.
There is already plenty of topics on this i believe. Please use the search option at the top of the page before you post a new topic.
agree, with CodyFallsForth that is. besides the Nydas Worm is like a nuke aparently. Wait.... this thread is dead isn't it?