Like that substitution magic ring, for example.
Someone can use it to impersonate Ariel.
Create a situation where we look vulnerable and strike the opponent back.
In that situation, Ariel will make her move.
Returning from meetings with nobles and behind-the-scenes work.
During morning, evening, late at night.
It would be possible to feint vulnerability in our movements.
If the other side comes to us, it saves us the trouble of finding them.