Hagia

Hagia is a feudal shrine world in the Sabbat cluster, birthplace of Saint Sabbat and the place her remains were kept. Infardi cultists took the Doctrinopolis in the crusade until Guard forces clawed it back and a relic in her Shrinehold broke a Chaos fleet in orbit. The saint's original M35 crusade started on these hills, which is why the later war for the shrine still matters.