The Heart of Avelorn gives Tyrion the Magic Resistance (2) special rule. In addition, if Tyrion suffers an unsaved Wound that would kill him (including unsaved Wounds that killed him as a result of the Killing Blow, Heroic Killing Blow or Multiple Wounds special rules), roll a D6 before removing him as a casualty; on a 2+ Tyrion negates the Wound and the Heart of Avelorn is destroyed. Otherwise, Tyrion is removed as a casualty as normal.