So theoretically, if you have 2 of these on your side of the field and some fiends in your graveyard, either of them cant be destroyed until each fiend in your graevyard is banished. It's effect only negates 'This Card" from being protected, not "All Archfiend Empresses".
Can anybody confirm this? or will i have to buy another and be potentially let down?
Although Archfiend is literally in the title of this monster's name, it is not considered an Archfiend type monster. The only cards that work with Palabyrinth effect are Summoned Skull, Beast of Talwar, and Black Skull Dragon