Arms Warriors can currently get the Arcane Bladereaper Hidden Artifact Appearance in the EU region!
The “Secrets of the Axes” quest is available for Warriors on European servers today. Talk to Master Smith Helgar in your Order Hall and complete the quest to unlock the hidden Arms Artifact appearance The Arcanite Bladebreaker.
The quest should be available until reset in the region. The video below will guide you through the whole quest line.
Source: Reddit