While certainly not as powerful as the Oracle, the Sanctum Priestess is almost a match for the spell-casting warlords of opposing factions.
A choice of 3 spells from a huge selection means you can tailor these maidens to very specific strategic roles.
Levitate and Aegis of the Gods means they can usually survive a few attacks, despite their low armor.
A potential MAG of 8 and extended casting range from Concentration make them formidable spellcasters.
Every warband should have one!