Weather Ball

The Weather Ball (天候（ウェザー）ボール) is the most important invention on Weatheria and it seems to grow in a garden. It has a similar appearance to a snow-globe with what appears to be lightning inside. Nami stole one of these inventions and it is later seen when she returns to Weatheria and asks Haredas how the Weather Balls work and if it can be turned into a weapon. Haredas is horrified at the thought and tells Nami not to say such scary things since the Weather Balls are capable of causing chaos around the world. They first appeared in Chapter 596.