[pnpgm] Scouting

[Alex Koponen]

Since Z'leyra is both invisible and insubstantial she can't tell those 
in the barn that it is time to run and regroup a ways away so that we 
can prepare better for the major fight with the Vong.

Instead, she decides to scout out the Vong by checking out all the 
buildings as fast as she can, recasting Levitation and 
Insubstantiability at the max EL that she can cast in one phase as the 
previous casting gets close to ending. If the distances warrant it she 
will also use Teleport EL0 to go to other building roofs.