Roaring Cold Wave Cannon (冷気咆哮砲, Reiki Hōkō Hō) is one of the Magic Tools that Umm Madaura uses. It utilizes Ice Magic. It emits a strong cold wave, which if used under the sea, can instantly freeze water and attack the opponent. She also has some of the kids from her crew to give their Magoi through the Magic Amplifying Insect, and boost this Magic Tool's power. It is similar to Judar's Ice Magic, Thalg Al-Salos. Giant Shallal Rasas are also attached to the bottom of this tool to enable quick movement in the water by using it as propulsion.