The Contested Isle - The Hibernian Tribunal is a 192-page hardcover sourcebook for Ars Magica Fifth Edition that centers on the rich magical and political landscape of Ireland. The book provides an in-depth examination of Hibernia, including its distinct magical traditions, laws, historical conflicts, and storied sites such as the Dún festivals and ogham forests.
Detailed mechanics guide the creation of Irish-themed mysteries, covenants, and NPC cultures, and are supported by story seeds depicting tribal rivalries and persistent magical threats. The volume includes new Virtues, Flaws, spells, and creatures tied to Irish mythology, along with narratives authored by individuals such as James Ward and Mark Shirley. This edition offers storyguides robust tools to bring Hibernian legends and dramatized history to life in player-driven campaigns.