If one could decipher these imperceptible traces of information carried by the water flow, it would be akin to having countless invisible eyes and ears in the deep sea.
Based on this concept, Duke began working on a brand new magic, temporarily naming it the Water Flow Shadow.
The core principle of this magic is not to spy on real-time events happening afar, but to trace and interpret the faint imprints of various energies, substances, and information recorded by a specific body of water over a certain period.
To achieve this, the caster must have a sufficiently high Water Element Affinity Talent, otherwise it would be difficult to perceive these imperceptible bits of information hidden in the sea.
This requirement presents a high barrier for other wizards; those whose Water Element Affinity is insufficient have virtually no hope of using this magic.
