Phowa

Phowa (Wylie: 'pho ba; also spelled Powa or Poa phonetically; Sanskrit: saṃkrānti) is a Vajrayāna Buddhist meditation practice. It may be described as "the practice of conscious dying", "transference of consciousness at the time of death", "mindstream transference", or “enlightenment without meditation” (Wylie: ma-sgom sangs-rgyas).

Read more about Phowa:  Application of Phowa, Mark of Phowa Practice, Lineages, In Dzogchen