Scryscrambler

Casting this spell takes the form of you assembling the intricate parts of a complicated mechanical device (the material component of the spell) while reciting repeated mystical incantations. Upon successfully casting the spell, the assembled mechanical device is magically empowered and can be used by yourself or any other creature in possession of it who knows how it works.

Any creature that knows this spell knows how a scryscrambler works. As an action, a creature that is holding the mechanical device but does not know how a scryscrambler works can succeed on an Intelligence (Arcana) check against DC 15 to learn how it works. If told how it works by someone who knows, the creature gains advantage on this check. If a creature rolls a '1' on their Intelligence (Arcana) check, they break the device and the spell ends.

As an action, a creature that has the device in their hand and knows how it works can activate or deactivate it by manipulating its mechanisms using one hand. While the device is activated, the area within a 10-foot radius of the device cannot be perceived through magical scrying sensors and persons and objects within the area cannot be targeted by any divination magic that originates from outside of the area. Additionally, sounds originating from within the affected area cannot be heard from outside of the area.

The device can be activated for 60 total rounds, but the rounds do not have to be contiguous. The spell lasts while any rounds of activation remain, unless the mechanical device is broken or the spell is dispelled. While the spell lasts, the mechanical device has a faint aura of abjuration and transmutation magic.

At Higher Levels: When you cast this spell using a spell slot of 5th level or higher, the spell gains another 60 rounds of activation time, and the radius is increased by 5 feet for every two slot levels above 3rd.