Nabu's staff is Nabu's weapon. It's a long, golden rod with a purple jewel on top. He uses it to help himself to cast spells, but he also can use it for combat purposes.
In Season 4, Nabu used his staff as a container to keep the unbound energy of the Wizards of the Black Circle. Nabu used his staff, to defeat Duman because he was sick but the staff was so powerful that in the end, Duman died. Nabu finally used his staff to close the abyss that was created when Ogron tricked Morgana into wearing the Black Circle on her finger. But unfortunately even, Nabu succeeded in closing the abyss, the combat had drained all of his energy and he fell into a coma.
Trivia
- Saladin also uses a magical staff. His staff is a long golden rod with the top shaped like the head of a dragon holding a purple gem in its mouth.