Big Waaagh!

A Big Waaagh! is not a warclan but a weather system: the moment the three tempers of the Orruk Warclans stop fighting one another and point the same way. When Ironjawz brawn, Kruleboyz guile and Bonesplitterz zeal converge on a single foe, the raw Waaagh! energy every greenskin bleeds into the air stops dispersing and begins to pool, thickening into a green-gold haze that crackles between tusks.

The orruks feel it as certainty: weapons swing harder, wounds knit faster, and shamans who could barely light a fire the day before find gods speaking through their teeth. The doctrine holds that Gorkamorka is never more present than when all his children roar as one, for left to themselves the clans dilute him, and only in convergence do they briefly become the whole god.

Such unions are rare and self-consuming, for the pride that makes an orruk formidable makes him a wretched follower. It takes monstrous authority (a Gordrakk, a Megaboss whose fists settle every argument the fast way) to hold a Big Waaagh! together beyond one campaign. While it lasts, no wall is thick enough, and survivors speak of a green tide rising until the sky itself seemed to turn the colour of a god's grin.