Dzogchen practices can lead to full enlightenment and transmutation of the physical body into a rainbow body while still living.
The rainbow is actually a non-physical body, and it enables to go anyplace at any time where one directs one’s compassion. It is said to be a manifestation of Sambhogakaya, which is another way of describing the cosmic bodhisattvas and Buddhas.
In other words, through Dzogchen practice, one can become a kind of Buddhist deity.