Oya is an Osha and is closely related to Iku, the divinity of death. She is the promoter of storms, hurricane winds and sparks. … Oya is the Orisha of the Niger River, formerly called Oya, by its 9 tributaries. She was born in Ira. Oya is one of the so-called Orishas of the dead with her sisters Obba and Yewa.