Arc 18The Flood of Orgrimmar
Cairne’s campaign devastated the Horde, while Sylvanas took the Iron Horde and Silvermoon by force and Khadgar became entangled in schemes around the Dark Portal. The arc ended with Cairne unleashing his hidden flood on Orgrimmar.
- Cairne Bloodhoof’s Tauren army destroyed settlements across the Barrens and marched on Orgrimmar, where Vol’jin’s Orcs met them in battle.
- Cairne transformed fallen Tauren into powerful undead warriors, routed the Orcs, and besieged Orgrimmar, but Vol’jin discovered that fire could stop the undead from rising.
- Cairne and Vol’jin’s negotiations broke down as Cairne prepared a reservoir above Orgrimmar, while Sylvanas accepted Big Candle Gagg’s offer to seize the Iron Horde.
- Sylvanas used Mannoroth’s Fel blood to force Grommash Hellscream and Kilrogg Deadeye to submit, then took Silvermoon after Lor’themar’s allies turned against him.
- Sylvanas’s Forsaken conquered Zul’Aman, but Zul’jin escaped after the Amani priests resurrected him, and Sylvanas sent a demand to Rastakhan for his surrender.
- Khadgar refused Cordana’s request to help free Illidan, then learned from Kalecgos about Sylvanas’s message and discovered Kel’Thuzad’s magic near the Dark Portal.
- Khadgar and Kalecgos were transported to an icy parallel world, where Khadgar made a private deal with Kalecgos before opening a portal out.
- Cairne used Goblin treasure to hire mages and prepare a flood above Orgrimmar, then sent the water crashing down while Vol’jin and the Horde slept.