Item #41090 (possibly named "Monster Zulaman Staff 2h Drakuru Prophet") doesn't exist. It may have been removed from the game.
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Monster - Zul'Aman - Staff, 2H, Drakuru Prophet - Live
Monster - Zul'Aman - Staff, 2H, Drakuru Prophet - PTR
Monster - Zul'Aman - Staff, 2H, Drakuru Prophet - PTR 2
Monster - Zul'Aman - Staff, 2H, Drakuru Prophet - Beta
Monster - Zul'Aman - Staff, 2H, Drakuru Prophet - Wrath of the Lich King
Monster - Zul'Aman - Staff, 2H, Drakuru Prophet - Cataclysm