Comet Staff (コメットメイス Kometto Meisu?, lit. "Comet Mace") is a staff that can be wielded by Donald in Kingdom Hearts II and in Kingdom Hearts II Final Mix. It can be purchased at the Moogle Shop in Olympus Coliseum. It is part of the set of weapons based on Mysterious Tower, including the Star Seeker and the Falling Star.
These weapons are decorated with moons and stars, and are the second set of weapons available to the party. Like the Star Seeker, its name and design could reference the worlds of the Kingdom Hearts universe, which are represented in the night sky as stars.
Most of the Comet Staff's handle is blue, but the tip is light green and fans outward. The head of the staff is a white ring with a light green inner edge and five shout spikes lining its outer edge, causing it to resemble a five-pointed star. There is a small, gold, five-pointed star set in the middle of the ring.