Bungie has detailed all the requirements in the most recent weekly update. Personally, I've had them drop myself. [url]https://www.bungie.net/en/Explore/Detail/News/47042[/url] [quote]Since this update has gone live, two important issues have emerged that we’d like to bring to the attention of players: Armor earned from the “Leviathan, Eater of Worlds” raid lair is not displaying its Prestige raid lair ornament or ornament requirements. These ornaments may still be unlocked by completing the actions listed below. This information is also available in this help article. Head Armor Ornament: Complete Prestige “Leviathan, Eater of Worlds” and the Throne Challenge Arms Armor Ornament: Complete Prestige “Leviathan, Eater of Worlds” and the Gardens Challenge Chest Armor Ornament: Complete Prestige “Leviathan, Eater of Worlds” and the Pools Challenge Leg Armor Ornament: Complete Prestige “Leviathan, Eater of Worlds” and the Gauntlet Challenge Class Item Ornament: Complete Prestige “Leviathan, Eater of Worlds” Weapons earned in Prestige raid lairs cannot be infused directly into other Legendary weapons. They may be infused into Exotic weapons, and those Exotic weapons may then be infused into non-raid Legendary weapons, but players should exercise caution when doing so because non-Prestige raid lair Legendary weapons will be capped at 385 Power when infused. This information is also available in this help article.[/quote]