Willem Janszoon's Boomerang

Once used by Willen Janszoon during his exploration of Australia. When this is thrown, it becomes razor sharp and is able to slice through anything. The boomerang always returns to the user.

Origin
Willem Janszoon (c. 1570–1630), Dutch navigator and colonial governor, is the first European known to have seen the coast of Australia - in 1606. Janszoon served in the Netherlands East Indies for several periods 1603–11, 1612–16, including a period as governor of Fort Henricus on Solor.