Spell Recall and Preferred Spell

[Lord Pendragon]

Spell Recall:

At 4th level, the magus learns to use his arcane pool to recall spells he has already cast. With a swift action he can recall any single magus spell that he has already prepared and cast that day by expending a number of points from his arcane pool equal to the spell’s level (minimum 1). The spell is prepared again, just as if it had not been cast.

Preferred Spell:

Benefit: Choose one spell which you have the ability to cast. You can cast that spell spontaneously by sacrificing a prepared spell or spell slot of equal or higher level. You can apply any metamagic feats you possess to this spell when you cast it. This increases the minimum level of the prepared spell or spell slot you must sacrifice in order to cast it but does not affect the casting time.

A 13th-level magus uses Preferred spell (Shocking Grasp) to convert a Wall of Force into a Quickened Shocking Grasp.

He then uses Spell Recall to fill the spell slot he just expended.

1. How many arcane pool points does it cost? 1, because he cast a 1st-level spell (Shocking Grasp), or 5, because Wall of Force is a 5th-level spell.

2. What spell now occupies that spell slot? Wall of Force or Quickened Shocking Grasp? Or can the magus choose?

[Quantum Steve]

The slot was used to prepare a Wall of Force so that's what would be recalled, and it would cost 5 points.

[Lord Pendragon]

That is what I was thinking as well.

That would mean that efficiency-wise, it'd be best for a magus to prepare a single Quickened Shocking Grasp in one of his 5th-level slots, as that would only cost 1 point to Recall, and only activate Preferred Spell when out of (or running low on) arcane pool points. Or perhaps when needing a second Quickened Shocking Grasp right now without spending another round recalling it back.