The Thunder Blade is the second sword in Club Penguin. It is sold in the Medieval Catalog, and costs 1,700 coins. This im is one of the only weapons which can defeat the Pookies. It is thought of being rare as it's the second sword in Club Penguin and is very expensive, so not many penguins have it. Most member agents of the Resistance should have these, as they help in battle. A LOT.