How to Get Crossbows of Infinite Steel in Throne & Liberty The Crossbows of Infinite Steel can drop from the following sources: Reptilian Sentries in Saurodoma Island Reptilian Burchers in Saurodoma Island You can also craft it at the Senior Weapon Crafter in Stonegard Castle, if you have a Precious Lithograph: Crossbows of Infinite Steel. Lithographs are usually purchased at the Auction House.