Glow (formerly Radiant) is a spell in the original Dragon Quest.
The Glow spell is used in dark, underground areas to illuminate the area. Unlike torches, which have a visibility radius of one tile, Glow has a radius of three. However, as time passes, the radius reduces to two, then one, then fades completely. Casting the spell again resets the visibility radius to three. Casting Glow outside of a cave will consume MP, but will only give a "But nothing happened" message in response.
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