Niva'Jijn
From Oberon_wiki
The Niva'Jijn (pronounced Nee-VAH-Jeen) is the Elven name for the head of the church of Corellon. It is an elected position and his held for term no shorter than 120 years and no longer than 150.
As Elven society is a theocracy the Niva'Jijn is, in effect, the ruler of the Elves.