Mastering Honkai Star Rail: A Comprehensive Guide.
To upgrade Preservation Trailblazer in Honkai Star Rail, players need to obtain six Shadows of Preservation Eidolons. Five of them can be found by completing story quests and purchasing them from the Jeweler's Pagoda store for 250 Strale each. These Eidolons provide various boosts to the Trailblazer's abilities, including increased defense and damage output.