Q. What happens to Dusknoir Lv.X when it is KO'd by Giratina Lv.X's "Darkness Lost" attack? Does it go to the Lost Zone, or does "Ectoplasm" allow it to become a Stadium?
A. When Dusknoir Lv.X would be Knocked Out, it becomes a Stadium instead of being discarded. Since it is not going to the discard pile, it is not sent to the Lost Zone. (Feb 12, 2009 PUI Rules Team)