Duergar priestess

Also known as gray dwarves, the duergar are from the Underdark and are the evil cousins of the surface dwarves.

Special abilities
Duergar priestesses are immune to paralysis. They can cast invisibility as a spell-like ability with a caster level equal to their total hit dice (to a maximum of caster level 15).

A duergar priestess is a pure cleric with the following spells prepared.