Hypersmurf
Moderatarrrrh...
moritheil said:See, where this differs from a druid or cleric flamestrike is the fact that once you have, say, a heightened magic missile that is 5th level, there IS no lower level version of it anywhere. It has become a different, although very similar, spell. Heighten spell even mentions that it is different from other metamagic feats in this regard; a Heightened Magic Missile IS NO LONGER Magic Missile, the first level spell. It is a fifth level spell that behaves as magic missile. It does not exist as a fourth, third, second, or first level spell; it is Magic Missile Heightened To Fifth Level.
Why Heighten it to 5th, then? Under that reading, Heightening it to 2nd would beat Spell Immunity: Magic Missile...
-Hyp.