Show 'em Who's Boss

So youse is |n, da git all the other gits 'as been talkin' bout. You don't look as big as dey was sayin'. Lucky for you dat youse talkin' to me and not da big boss, Grumlok. Youse look just big 'nough to be a snack fer 'im. Oi! I's a use for a git all da boyz fink is big and strong, but first I wanna see just how strong you is! If you fink youse strong enough to be one o' my bosses, you got to kill two other strong Orcs who want to be bosses, too. Get ready for a scrap! When youse ready to fight, use the horn, and it'll summon two o' da other Orcs whose lookin' to be a boss. Beat 'em both, an' den maybe I'll fink about lettin' you lead some boyz in my Waaagh!

Prepare for a challenging battle, and when you're ready to begin, use the Summon Horn in the Eternal Citadel of the Inevitable City. It will summon two Boss Wannabes. Defeat them both and speak to Bonespitta when you have done so. If you lose, use the Summon Horn to try again.