Two souls, each unaware of the history that both created this world and was gradually destroying it, too. The Dream Visitor’s connection was limited, lacking familiarity with the two that loitered beside the cursed waters of acid and poison. As their attention focused on one another and the evident danger they were lingering beside, they lacked the awareness for any potential runes nearby.
Just as their eyes met the murky river, from behind them, there was a faint, blue glow. Too weak to be noticed by those unaware of what to seek, it quickly faded, unnoticed. Perhaps it was nothing more than a trick of the light, a stray sunbeam glinting off a particularly glossy rock. Whatever it was, it now lacked any trace of light, falling back into the facade of ordinary landscaping.
This theoretical rune will go unfound, but perhaps another time fate will guide you to success.