Grants Japanese Monks the Stealth ability in addition to a passive Dodge ability.
—In-game description

Intonjutsu Stealth is a technology in Age of Empires III: The Asian Dynasties that is unique to the Japanese and can be researched at the Monastery once the Colonial Age is reached. Once researched, it allows the Ikko-Ikki to use stealth mode and gives them the Dodge passive ability which allows them to occasionally evade incoming attacks.

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