It was going to be a surprise attack. No one was close enough to stop our raid. But when we got to the elf town, we found a thousand soldiers waiting.
This is a useful spell which essentially duplicates the function of Boots of the Explorer. The only real difficulty is remembering to cast it at the start of every turn when you are on slow terrain. It can also be a drain on a low level spellcaster's spell points.
This spell could also be said to duplicate the effect of having Expert-level Pathfinding skill.