The invisibility cloak emits an odd fluctuation when used, being a special kind of stream of light that can make the cloak visually invisible by allowing it to bypass both emitted and reflected light sources on the surface of objects.
However, this cloak has its limitations.
That is, when in use, it still creates touch sensations and produces sounds upon contact with objects.
As a result, for a master, there's often no need for a mental probe; just having sharper senses is enough to detect it.
And for the person using the cloak, their mental strength must be significant, otherwise they might be plunged into darkness once activating it, even experiencing problems walking.
Therefore, the invisibility cloak is completely useless for those with a high Mental Realm; for those with a low Mental Realm, it's just a "blind man's trick".
Only under the unique environmental condition of Ice Fire Island (where the air currents are chaotic) can it be of some use.
