Here are the stats of Black Mask of the Mistress (int caster only):
15 AC, Range 8, str 10, sta 10, cha 30, int 30, agi+35, hp 195, mana 240, 40 DR resist, FT 1, mind shield 5, spell war 1.
Here is another mask from the zone, Mask of Multiplicity (almost all classes:
30 AC, conjuration +5...