When a quasit's master dies, the quasit can attempt to follow the master's soul into the Great Beyond by making a DC 15 Will save. This functions as plane shift, but affects only the quasit and transports it into the Abyss and places its master's soul in the quasit's possession as a writhing larvae rather than using the evil master's soul to create new demonic life. In this manner, a quasit can use its newly captured soul to bargain with more powerful denizens of the lower planes, and perhaps secure a vile transformative "promotion" to a more powerful form of life in the process.