domino said:Also, there's a feat that doubles the area of spells, isn't there? How would an even greasier grease bomb work with that, so that you can grease up more? In terms of prices, I mean.
SRD said:WIDEN SPELL [METAMAGIC]
Benefit: You can alter a burst, emanation, line, or spread shaped spell to increase its area. Any numeric measurements of the spell’s area increase by 100%. 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.