Guardian flute
[OP: ]
In the great academy, there were various things hidden away from the students and even from teachers sometimes.
There were objects in the academy that were scattered across the campus, in the hidden hallways that were covered behind the illusions even more powerful than what the headmaster could cast.
Some of the mysteries of the academy were uncovered by the students every few hundred years before they get lost with the flow of time and the students have to find out about them once again.
-Ooooooooooooong!
In every batch, there is at least one curious individual that devotes their entire time finding these hidden pieces that either helps them immensely during their academic life, or becomes a boon that helps them step above the rest of their batchmates.