The praying and propitiation to certain gods to obtain good omens which indicate God's favour and blessings are held in a series of three-tiered classes of minor ceremonies (), intermediate rites ( or ), and major festivals () in ascending order and complexity. Any Iban Dayak will undergo some forms of simple rituals and several elaborate festivals as necessary in their lifetime from a baby, adolescent to adulthood until death. The longhouse where the Iban Dayaks stay is constructed in a unique way to function for both living or accommodation purposes and ritual or religious practices. Nearby the longhouse, there is normally a small and simple hut called langkau ampun/sukor (forgiveness/thanksgiving hut) built to place offerings to deities. Sometimes, when potentially bad omens are encountered, a small hut is quickly built and a fire is started before saying prayers to seek good outcomes.