Area 
Creates a shimmering dome that repels bad weather of all types (up to and including Windstorm spells, volcanic ash, and rains of frogs, as well as flying insects!). Floods, landslides, and similar catastrophes destroy the dome. Inside the dome, the air remains fresh and the temperature remains comfortable for the caster.

Duration: 6 hours. 
Base cost: 3 to cast. 2 to maintain. 
Prerequisites: At least two spells from each of the four elements.