Mjolnir

The  was a Hand Item in Club Penguin Online. It cost 300 coins in the Penguin Style catalog or it could be obtained for free during the Marvel Endgame Takeover party.

Trivia

 * It went with the Thor Helmet and Thor Armor.
 * The Moderators often referred to Mjolnir as the "Ban Hammer" and liked to carry it around to ban people with.