The Wizard's Prize
The Voice of Isengard#64 (x1)
3A-B (15)

You've found Mugash, but the Orc captain won't be taken without a fight! He howls and rages against you with the ferocity of a cornered animal. All the commotion is sure to draw more Orcs to the fray, yet you must subdue the huge Uruk before you can retreat down the mountain...

Time 3.

Forced: After the last time counter is removed from this stage, return Mugash to the staging area and reveal X encounter cards. X is the number of players in the game minus 1. Place 3 time counters on this stage.

Progress cannot be placed on this stage unless Mugash is attached to a hero.

If the players defeat this stage, they win the game.