Maybe it's different in the PHB, but IDHMBOM, so SRD it is...brehobit said:A magic missile does d4+1. An empowered MM does (d4+1)*1..5 not d4*1.5 +1. As I recall, that is actually the example used in the empowered feat.
The +1 of the Magic Missile isn't variable. Anything with a "d" in front of it is, and that's what will be empowered. So a 7th level mage shooting four 1d4+1 missiles will end up with: 4d4 + 4 + 1/2*(4d4).SRD said:EMPOWER SPELL [METAMAGIC]
Benefit: All variable, numeric effects of an empowered spell are increased by one-half.
Saving throws and opposed rolls are not affected, nor are spells without random variables. An empowered spell uses up a spell slot two levels higher than the spell’s actual level.
But yeah, like you said, the edge won't be touched.