Okay, so I'm playing in a D&D 3.X/Pathfinder game, everything in print available.
Some of the players are wanting to 'convert/combine' multiple lower level spell slots into a higher level spell slot (they're wanting to combine say 2 1st level to make a 2nd level spell slot, or 2 2nd level slots to make a 3rd spell slot available...
I know you can cast a lower level spell with a higher level spell slot (even not using metamagic feats), but could, say a sorcerer, that's out of higher level spells, 'combine' a number of spell slots from lower levels to cast a 'higher' level spell?
We're assuming that the character can already cast the higher level spells...