Piece of Zerstörer's Staff

The Treasure of the Knights Templar is the powerful object that seven discovered after sacking  during the Fourth Crusade. The knights, who worked for the seven families, decided that it was too dangerous to give to the benefactors of the houses they served, so they carefully hid the treasure in a catacomb in the and created a map consisting of seven sections, each on the handle of one of Seven Keys. For centuries, it was believed that the treasure was so powerful that it would allow the Royals to rule the world if it fell into their hands.

Finding the Treasure
After Nick came to possess five of the keys, he and Monroe traveled to the Black Forest to find the long-buried treasure. There, they fell into the catacombs and finally were able to discover the treasure, which was hidden behind seven glowing skulls positioned in the shape of a "G," as well as a shield with a cross on it. A metal box contained the treasure within, and it required all seven keys to unlock it, plus the blood of a Grimm to break the final seal. Since Nick only had five of the keys, he had to pick the last two locks. Upon opening it, Nick, Monroe, Rosalee, Wu, and Hank discovered what appeared to be a stick, wrapped in cloth that had an unknown language written on it. The only known power or property that the treasure is known to possess is the ability to heal, as it healed a severe bite wound that Monroe had suffered on his arm in mere seconds.