The moon is made up of a substance called warpstone. This rock is solidified Mana compressed into physical form. Pieces of the moon will sometimes fall to earth, which contain magical properties and are used in spells. Although powerful, it is very unstable and radioactive. Special precautions must be made when working with the stone, lest it cause mutations within the individual.
Occasionally, an event known as a solar eclipse occurs, when the moon, sun, and earth align with each other. During this event, the magical power of witches increase. However, It is advised that pregnant women remain inside during the event to avoid exposing their unborn child to danger. Developing babies caught in the eclipse have an increased likeliness of being stillborn or born with various deformities and mutations. Exposure to the event increases the chances 70%, but leave regular individuals unaffected.
Common sense leads one to infer that the moons radioactive effects are augmented during a solar eclipse. However, nobody can explain why this happens during this event, but remain normal during other times of the year, or why only unborn children are in danger while anyone else remains unaffected. How can I explain these effects?