From UCA News:
An archbishop in Indonesia’s West Kalimantan province has called on young male members of a Catholic indigenous group to ditch a ritual aimed at making them invulnerable to attack, saying the practice is a form of “black magic.”
According to the Dayak people, the ritual has been practiced for many generations and is believed to ward off injuries that can be inflicted by sharp weapons. The ritual involves young males aged 15 or 16 going into a forest for four days where they meditate and undergo a ceremony to invoke the protection of tribal spirits.