Obsidian armor

Description
The Obsidian Armor is a set of prestige armor art available to all the professions for each of their armor sets, and some of the special armor pieces. This means even a character who only has access to Prophecies Campaign content may craft armor types introduced in the Factions Campaign, such as the +health set. As with other prestige armor arts, it's only available as level 20 armor.

A recurring theme between the Obsidian art of many of the professions seem to be "spikes" and "black", although the Ranger and Monk Obsidian art definitely don't have spikes.

Only the Warrior, Assassin, and Ritualist Obsidian art includes the headgear. Other professions have only four pieces.

Note that, while each armor pieces cost 15 (except for Ascetic's and Cabalist's), the Obsidian Armor is typically not considered 15k armor.

Where to get it
Obsidian armor must be crafted by the Eternal Forgemaster within The Fissure of Woe. To be able to get the Forgemaster to craft any armor, players must finish the following quests:
 * The Eternal Forgemaster
 * Defend the Temple of War
 * Restore the Temple of War

Materials common to any Obsidian Armor: Obsidian Armor also always require additonal crafting materials.

Other types of prestige armor

 * Ascended Armor