Altar of the Depths

The Altar of the Depths is a Naga unit building that revives the Naga Sea Witch. It helped both Illidan and Vashj in their efforts. It is found during the following campaings: Terror of the Tides, Curse of the Blood Elves and Legacy of the Damned from Warcraft III: The Frozen Throne Expansion.

It appears in the following missions:
 * The Broken Isles
 * Wrath of the Betrayer
 * Balancing the Scales
 * The Ruins of Dalaran
 * The Brothers Stormrage
 * The Search for Illidan
 * Gates of the Abyss
 * Lord of Outland
 * The Return to Northrend
 * A Symphony of Frost and Flame

Statistics from Warcraft III

 * 900 HP
 * revives hero
 * 5 fortified armor