From the publisher:
Sub Rosa is a new Ars Magica fan mazagine, released online in PDF format in quarterly editions. It is a magazine made by Ars Magica fans, for Ars Magica fans.
Sub Rosa includes articles that cover all aspects of an Ars Magica saga, including new rules, virtues, flaws, spells, sagas, story seeds, short stories and more. It alsos include regular interviews with the Ars Magica line editor, authors and illustrators.
Sub Rosa is about providing refreshing new fan-driven content for Ars Magica sagas.