everybody regrouped a few more times and gisbo tried many other weapons , including a pole-arm , which he found he was too clumsy with ; various daggers , including the knuck-knives which he fumbled and cut his wrist with ; two heavy balls with handles known as stugs that he could barely lift ; and the oddest weapon gisbo had yet seen , known as a conundrum , which looked like a giant dinner plate with a toothed edge at the top .