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Traveler is a 
Promotion for the Missionary from the Path to Nirvana scenario in Civilization VI.
Effects[]
Faster 
Movement in Woods, Rainforest, Hills, or Marsh.
Civilopedia entry[]
Some missionaries feel called to share the faith with civilizations far from home, leaving everything behind and embarking on epic voyages beset by many perils, with their sacrifice honored by those who share their beliefs.