Assisted Childbirth

With the use of his staff, if a child is far enough along in the pregnancy Whis is able to use his magic to warp the baby out of the mother's womb in perfect health as well as restore the mother to their figure prior to their pregnancy as well, avoiding the possible complications in normal childbirth. Whis used this on Bulma to make Vegeta partake in the Tournament of Power, as the Saiyan Prince refused to participate until his daughter Bulla was born.