(devil, evil, extraplanar, incorporeal, lawful)
Source: The Infernal Syndrome, pg(s). 86
An uniila appears as a floating, shrouded, lithe feminine figure darkly cloaked in glyph-decorated and tattered arcane robes. Four pallid arms reach from beneath the robes, clutching eldritch blades or implements.
Habitat & Ecology
Uniilas have an innate and exceptionally frightening spellcasting ability, and can offer nearby mortal spellcasters the ability to prepare and cast additional spells. The fiends can prepare a witch token, in the form of a ring or other item, which makes a mortal spellcaster's spells more difficult to resist but allows the uniila to scry upon and harm the spellcaster at will.