EQ Mob:Vallon Zek  

In the Plane of Time: For information about this event, see this quest entry. Vallon Zek drops three items from his loot table.

In the Plane of Tactics:

In the Rathe Council Chambers: A chest with loot spawns after the Zek Brothers event.

In the Sepulcher of Order: Part of the event "The Triune God" (see this quest entry for the group version and this quest entry for the raid version).

In the Plane of War: Part of the 15th anniversary raid event "The Brothers Zek" (see this quest entry for information).