This article or section is an item stub. You can help expand it by editing it. Use {{Stub/Object}} for objects that are fixed in place. You might want to use the Item boilerplate to fill in this article (see WoWWiki:Boilerplates for help). Alternatively, you might want to import some information from a database site - see:  Wowhead  Thottbot  WoWDB for listings.

This article or section contains lore taken from Warcraft III: Reign of Chaos, Warcraft III: The Frozen Throne, the manuals, and official bonus maps.

Improves building armor and hit points.

Source

Maiev can find one in Wrath of the Betrayer, chapter 4 of the Frozen Throne sentinels campaign, Terror of the Tides.