The obsidian war bow, carried by the Beholder of Battle, has a reputation almost as great as the God that wields it. Whipmaster Snargeant is not sending you to retrieve it; you've yet to earn the honor of look at such a weapon. However, if you can return with the replicas of the bow found throughout the tower, then perhaps Whipmaster Snargeant will find a way for you to die to an arrow that was once fired from the Master Strategist’s bow. You may thank Whipmaster Snargeant for that honor later, after you've earned it.