Become Lich

A spell inititally created by a mad necromancer, in an attempt to surpass mortal limitations and touch upon the realm of the gods. This spell allows the user to transform a sentient being, including themselves, into a Lich while retaining their conciousness.

During the process the sentient beings must slowly be tortured, taking special care not to allow them to die until completion of the spell. Upon completion of the spell the spirits of the sacrifices are absorbed by the being that is being converted. 

Additionally if the caster has a diamond worth 5,000 gp or more they may sacrafice it to attempt to enslave the lich. Make a DC10 Intelligence check during the final transformation of the lich in an attempt to brand the lich's soul, allowing the caster to control the lich. However, if the caster dies, then so too does the lich. Upon failure the newly born lich turns hostile.