During the 18th-anniversary event, world bosses drop items that have been removed from the game. Here’s a list of loot you can get from Azuregos, Lord Kazzak, and the Dragons of Nightmare.
Do not forget to pick up The Originals weekly quest before killing the bosses. It rewards 150 Timewarped Badges.
Azuregos
Azuregos can be found in southeastern Azshara.
Acid Inscribed Pauldrons (removed from the game)
Cold Snap (unobtainable)
Fang of the Mystics (removed from the game)
Dragons of Nightmare Loot (Emeriss, Lethon, Taerar, Ysondre)
The dragons have a chance to spawn in Duskwood (Twilight Grove), Hinterlands (Seradane), Feralas (Dream Bought), and Ashenvale (Bough Shadow). The world bosses have a shared loot table.
Acid Inscribed Greaves (removed from the game)
Boots of Fright (removed from the game)
Circlet of Restless Dreams (removed from the game)
Deviate Growth Cap (removed from the game)
Dragonspur Wraps (removed from the game)
Gauntlets of the Shining Light (removed from the game)
Hammer of Bestial Fury (removed from the game)
Nightmare Blade (removed from the game)
Polished Ironwood Crossbow (removed from the game)
Unnatural Leather Spaulders (removed from the game)
Lord Kazzak
Kazzak spawns within the Tainted Scar in the Blasted Lands.
Amberseal Keeper (no longer obtainable)
Empyrean Demolisher (no longer obtainable)
Fel Infused Leggings (no longer obtainable)