Cruxweaver Armor is an Arcanist Skill, found in the Soldier of Apocrypha skill line.
Base Skill: Fatewoven Armor
|Forge defiant runic armor around you, granting Major Resolve for 30 seconds, increasing your Armor by 5948. While the armor persists, taking damage applies Minor Breach, reducing the Armor of your attacker by 2974 for 6 seconds. Blows against your armor also generate Crux, up to once every 5 seconds.|
Cruxweaver Armor is a morph of Fatewoven Armor base skill. The other morph is Unbreakable Fate.