20-player raid in Stranglethorn Vale with Hakkar the Soulflayer
Four world bosses (Emeriss, Lethon, Taerar, Ysondre) at dragon portals
New reputation with powerful enchants and profession recipes
Reputation system for ZG rewards
Extremely rare mount drop from High Priest Thekal
Rotating boss encounter in ZG with unique loot tables
Phase 4 introduces the first 20-player raid, making organized raiding more accessible while maintaining challenge. Zul'Gurub features troll gods and culminates in the battle against Hakkar, whose Corrupted Blood mechanic would later inspire academic studies on disease spread.
The four Green Dragons add contested world boss content with unique drops including the Staff of the Qiraji and powerful nature resistance gear needed for later content.
ZG becomes a popular "catch-up" raid that allows guilds to gear alts and newer members while pursuing rare mounts and reputation rewards from the Zandalar Tribe.