How does the Parma Magica work?
Maintainer’s Note: Fifth Edition substantially revised the magic resistance rules, so this entry only applies to Fourth Edition and earlier. Parma Magica is a topic that has long been debated on the Ars Magica list, and in an attempt to prevent too many more flames, I submit to my sodales the following. Please realize that this is how Parma Magica is defined by ArM4. It does not cover all situations and you will have to make rulings based on your own judgment of how parma and magic resistance work. I only ask that you do not try to claim that your house rules are anything but local rulings. • Parma Magica literally translates to ‘magic shield.’ It is defined in ArM4 as an Hermetic skill, and its description is found on pages 55, 72, and 73 of the 4th ed. rules book. More details can be found on pages 69-74 of the Wizard’s Grimoire, Revised Edition (WGRE). • Parma Magica is a form of magic resistance, and acts per the same rules as other magical resistances, except that it must be reins
