Name given by SE to the "hidden effect" of the elemental staves. It increases the effects of weather bonus's give by 10%. There will be a penalty to magic aligned with the opposite weather by 10%. This is applied independent of regular weather bonus, greatly increasing your chances of a 10% bonus and allowing for a 20% bonus. If paired with Elemental Obis the bonus of both effects is forced, creating a 20% bonus under the correct weather.