Temporary stats from spells?

[Lythe Featherblade]

I play a witch, and constantly use the spell Threefold Aspect to appear older and gain 4 int and wis. The spell lasts for 24 hours, and with few exceptions I remain old all the time. My character also recasts this spell at sundown, so when I rest and prepare spells, there is no interruption where I briefly lose the extra int for when the spell drops and needs to be recast.

I am trying to figure out how temporary int and extra spell slots work.

I am assuming I can utilize those slots while I have that int, provided I have that int while I do my 8 hours rest. I'm also assuming that that I need to have that int when I actualy cast the spells from those specific slots.

What I don't know is what happens to those slots when I temporarily drop that int..
1)I can't cast spells from those slots until I regain the int
2)I lose the spells from those slots even after I regain the int

Also, I'm wondering how that int works for skill points
1)Do I put temporary ranks into skills permanently, and only gain those ranks when I have that extra int?
2)Do I decide what skills I want ranks in every time I turn old, lose them when I turn young, and can decide to put ranks into other skills the next time I turn old? (unlikely and seems overpowered)
3)Do I gain no benefit to skills (other than stat bonus on knowledge)

[erian_7]

You actually don't gain extra slots or skill points,

From the PRD:

PRD wrote:

Intelligence: Temporary increases to your Intelligence score give you a bonus on Intelligence-based skill checks. This bonus also applies to any spell DCs based on Intelligence.

and

PRD wrote:

Permanent Bonuses: Ability bonuses with a duration greater than 1 day actually increase the relevant ability score after 24 hours. Modify all skills and statistics related to that ability. This might cause you to gain skill points, hit points, and other bonuses. These bonuses should be noted separately in case they are removed.

As the ability bonus doesn't last more than a day (two castings of the same spell still being two different bonuses), you only get the bonus on Int-based skill checks and spell DCs.

[Lythe Featherblade]

Thanks

[Raisse]

So could you use Extend Spell to make the spell last 2 days so that it would satisfy the greater than 24 hours condition?

[erian_7]

Yes, that would work. If you lose the enhancement bonus for any reason (changing aspects, dispel, etc.) you lose the slots and skill points. When you cast the extended spell and wait 24 hours again, you would re-chose what skills you want to add ranks.