Of all the mages in the world, liches are of the most fearsome and rare, and for good reason. Achieving it requires countless expenses in manpower and resources, and is only possible if you, the character, is already well established in a cult, monastery, or academy. The exact details of the Lich Ascension Ritual may vary depending on the region or cult, but all must satisfy the requirements:

A phylactery worth at least 5000 gold, in which you will store your soul.

A potion of rare poisons and blood. This takes at least a week for an entire cult to brew.

Finally, the ritual itself can only be administered by a full-fledged (level 20) lich

As long as your character has met the requirements and gone through the transformation, it is a lich. In the world's long history, there have been many types of liches: good, evil, neutral. Some have an unsatiable hunger for magic, others may lead a quiet life. Some have no flesh and all bone, others may appear as normal civilians and even have warm blood. Regardless of their story, every lich has the potential to unleash truly terrifying power.