"The Huron Sun Cult increases the number of Huron Mantlets you can train."—In-game description
Huron Sun Ceremony is a technology in Age of Empires III: The WarChiefs that can be researched at a Trading Post built on a Huron settlement. Once researched, it increases the train limit of Huron Mantlets by 200% – from 10 to 30.
While Huron Sun Ceremony is not very cost efficient, it can be useful in long running games, such as Treaty games, for generating a huge army of fodder units.