Elemental Zone

Select an Elemental trait: Air, Earth, Fire or Water. Elemental Zone gains the trait you choose and you inbue the area with the raw energy of that element, creating a zone that emits and amplifies magic of that type.  The temperature might suddenly rise or fall, spatter of rain may begin to fall from clouds, etc etc.

Spells with the chosen elemental trait cast against creatures in the zone get a +2 status bonus to their element type per dice, e.g a lvl 5 fireball spell will now do 5d6+10