The Onniont is a huge serpent of Huron folklore that looks like an armored fish. When it travels, it breaks through everything in its path. Rocks, trees, and bears are all grist to its mill. An onniont is unstoppable. Any small part of it would make a potent talisman.
Nobody ever saw an onniont. According to Jesuit missionaries, however, neighboring Algonquin merchants claimed to sell pieces of onniont, and publicized the legend themselves.
Vimont, B. (1858) Relations des Jésuites, v. II. Augustin Coté, Quebec.