_____ _ _ ___ _____ |_ _| |_ ___ / |/ _ \ |_ _|____ __ _____ _ _ ___ | | | ' \/ -_) | | (_) | | |/ _ \ V V / -_) '_(_-< |_| |_||_\___| |_|\___/ |_|\___/\_/\_/\___|_| /__/

Syntax: cast 'wall of force' <direction>

This spells allows the caster to block all others from going thru one
room to another.  It is only useful in cities and buildings.