Waveriding

Waveriding was a religious ceremony undergone by all waterwalkers, the specialty priests of Istishia, that celebrated their ability to summon a water elemental upon reaching a certain level of skill.

Description
This ceremony was always preceded by responsive reading and chanting that went on for an hour. Afterwards, the waterwalker would summon a water elemental and be carried by them on a riding across the waves of a large body of water. When the waterwalker finally returned from their ride, various gifts would be bestowed upon the water elemental. These included garlands of flowers, drafts of fine wine, and beautiful pieces of jewelry, pottery, or sculpture. These were said to be carried away by the water elemental back to the Sea of Timelessness, the divine realm of Istishia.