Effect: This spell cloaks a
province with a very potent effect - entrance into the province is impossible from outside
and the existance
of the province is wiped from the memory of all creatures of 6th level or less, and all
those of higher level who fail their saving throws.
The province will typically appear to have vanished, and to some extent exists in a pocket
dimension. A coastal province will appear to have disappeared, while an inland province
will have been replaced with a lake, impassable mountains or a flat, featureless plain.
Okay, it's a hugely over-powered spell, which probably never need turn up in a campaign,
but I could see it producing some nice Lyonesse-type legends.