Azmeri Reliquary Key?

If its like that it should be stated in the wiki no ? the wiki says "Azmeri Reliquary Key has restrictions on where or how it can drop." every other special key in the game has something to do with a boss, the azmerian mechanic doesnt have a specific boss unless the azmerian ranges one , but that cant be it... I wonder where you have that information from about that it can drop anywhere from up to level 35