Isawa Uso

Isawa Uso was a fire shugenja of the Phoenix Clan who became the Oracle of Fire.

Oracle of Fire
In 763 Isawa Uso was chosen to become the new Oracle of Fire. Shortly after ascending to this office, he disappeared.

Dark Oracle of Fire
In 774 the Oracle of Fire becomes corrupted and destroyed several villaged in the Phoenix and Dragon lands before disappearing into the Shadowlands as the Dark Oracle of Fire. He had been only stopped when his own magic seemed to overwhelm and consume him. At the same time, a massive explosion of fire was witnessed deep in the Shadowlands from the Kaiu Wall. At first thought to be a volcanic eruption, the Kuni later believed the insane Oracle was summoned and corrupted by the forces of Jigoku or perhaps the other Dark Oracles themselves. It was believed the Dark Oracle of Fire in the early 12th century was him.