Sathirian is required, definitely.
Once you have it, you get this dialog:
(1202341724)[Wed Feb 06 18:48:44 2008] You say, "Hail, Modani Qu'loni"
(1202341724)[Wed Feb 06 18:48:44 2008] \aNPC 27405 Modani Qu'loni:Modani Qu'loni\/a says to you in Sathirian, "The hidden self... inside a myriad of magic... is one that walks... quite softly."
(1202341730)[Wed Feb 06 18:48:50 2008] You say to Modani Qu'loni, "Who are you?"
(1202341730)[Wed Feb 06 18:48:50 2008] \aNPC 27405 Modani Qu'loni:Modani Qu'loni\/a says to you in Sathirian, "I am... the Modani. I have been... here... for ages."
(1202341737)[Wed Feb 06 18:48:57 2008] You say to Modani Qu'loni, "So you are a long lived skorpikis?"
(1202341737)[Wed Feb 06 18:48:57 2008] \aNPC 27405 Modani Qu'loni:Modani Qu'loni\/a says to you in Sathirian, "No. Skorpikis... I am not. I am... the observer. Once an enchanter... now trapped... in this illusion."
(1202341754)[Wed Feb 06 18

14 2008] You say to Modani Qu'loni, "I know something about illusions. I am Sudedoj and I am an illusionist."
(1202341754)[Wed Feb 06 18

14 2008] \aNPC 27405 Modani Qu'loni:Modani Qu'loni\/a says to you in Sathirian, "Be warned! It is not... just simple... parlor tricks you... command! For an arcane illusion... is not simply a trick.. of the eye. You will slowly become... what you personify. Slowly... your mind will change... your thinking... your instincts... until you become... as I, trapped... in an ages old illusion... of your own design. The Maiden's Mask... will become... a prison... if you do not... cast off your guise."
(1202341774)[Wed Feb 06 18

34 2008] You say to Modani Qu'loni, "I think I understand. I can't maintain one particular illusion for a very long time or I will become trapped within the spell. Thank you."
After that, I'm stumped. I can't find any reference to The Maiden's Mask in EQ2 or EQ1 lore.