The Magonians were supposed to sail the skies in storm clouds; they would then pay Frankish tempestarii to summon up storms over farmlands, during which the Magonians could swoop down and steal the corn from the fields.
According to myth, the Magonians were supposed to navigate through storm clouds; they hired Frankish tempestarii to summon storms over farmlands, which allowed them to descend and take the corn from the fields.