Quote:
Originally Posted by Christopher R. Rice
Area Information spells detect all subjects in the area for the spell. If you don't add range it functions as a emanation and detects everything within X yards of your person. If you add range then you can spin it out to whatever range and then detect whatever in the yards you've specified.
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As you note, Area detects all subjects in said area - but if the characters only need to detect the nearest one (because, in this case, they don't expect for everyone nearby to be summoning hellhounds), shouldn't Range suffice?