You can cast your spells so that they occupy a larger space.
Benefit: You can alter a burst, emanation, or spread-shaped spell to increase its area. Any numeric measurements of the spell's area increase by 100%.
Level Increase: +3 (a widened spell uses up a spell slot three levels higher than the spell's actual level.)
Spells that do not have an area of one of these four sorts are not affected by this feat.