Cultists of Khaine
Khaine is also known to elves as Kaela Mensha Khaine which means bloody-handed Khaine. To the Dark Elves Khaine is simply seen as the god of murder and blood or death, everything which they stand for. To the High Elves that never followed the dark path he is seen as an important god, a god which enhances the war-like side of their soul, but one which must be controlled. To Dark Elves Kaela Mensha Khaine is seen as a four armed, fanged, daemon-like giant surrounded by a sea of chittering scorpions: it is in this form that the murderers and assassins of the Old World have taken to worshipping. To the High Elves he is portrayed as a huge, angry elf warrior clad in bronze plate armour stained with blood. His long flowing jet-black hair is often caked with the blood of his foes. He is also seen as carrying two serrated blades that drip blood eternally. When the cult of Khaine developed Morathi personally encouraged by the emergence of increasingly frequent cultists in cities of all Ulthuan. Dedicated to the lord of murder, the cultists destabilized the various kingdoms in acts of sabotage or by bloody uprisings as frantic. Driven by boundless adoration in their divinity, the cultists of Khaine are the most fervent followers of the path of murder and regard it as a holy act. Encouraged by the priests of Khaine that lead them to battle armed with their weapons and their wicked spells offered by the Lord of Murder, Khaine the cultists to compensate for their obvious lack of discipline by a thirst for blood and a boundless taste for killing which freezes the blood of the less experienced warriors. Indeed, they have their hair stuck in the blood they poured over his face before each battle and the body is filled with obscene tattoos and bloody cuts they have imposed themselves. Yelling to raise the appeal of Khaine, their savagery prohibits any leakage or retirement, of Khaine cultists prefer to die until the last, taking the greatest potential to make offerings to the Lord of Murder.
Scaryness, and that god of murder lad sounds like a batch of cupcakes himself 0_o
So will Cultists be a playable and separate faction, or do these units belong to the Nagarythe faction?
They are a non-playable faction, and they can get new adepts by riots on your settlements in addition to the standard recruitment. You can recruit some of their units if you play with Nagarythe.