Obstructer of Lands

The Obstructer of Lands is the current Hardest to get weapon in the First Arena that requires the boss to be killed. It has a total damage of 9.5 with enchantments such as Sharpness VII (7), Looting X (10), Sweeping Edge VII (7), and Unbreaking X (10) for some reason. Even though it has unbreaking on it. To be able to buy it from the silverfish shopkeeper, you need 4 boss tokens.