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From Pathfinder Lost Omens Tian Xia Character Guide, which isn't enabled.

Sentinel's Orbit

FEAT 14
ARCHETYPE
Archetype Starlit Sentinel
Prerequisites Starlit Sentinel Dedication

Just as your constellation traverses the sky, so too can you. When in your sentinel form, you gain a fly Speed equal to your land Speed or 20 feet, whichever is higher.

Pathfinder Lost Omens Tian Xia Character GuideORC