So I am looking closer at Lore Oracle in preparation for creating one to actually play rather than just to theorycraft. And I came across Dread Secret. Which has a rather strange Duration entry.
PlantThings mentioned this a couple years ago here. We were also discussing durations of spells and how that affects the magical or non-magical attributes of its created effects not too long ago also. So I figure that this spell becomes an interesting case of applying the rules for spell durations to a particular complicated spell.
From what I am reading in the spell - and applying a very literal interpretation of things - this is what I see:
The spell has a duration of 'until the start of your next turn'. Which is identical to a duration of 1 round.
If the enemy gets a result other than critical success and you choose a weakness, then the target takes 1 point of damage of that weakness type - which is an instantaneous effect that does not have a duration.
If the enemy gets a result other than critical success and you choose a resistance, then the target loses that resistance until the end of your next turn. The effect will be magical in nature until the start of your next turn, and then will become non-magical for the duration of your turn - if that becomes important for some reason.
If a target enemy gets a result of failure on the save, then that enemy becomes Frightened 1 - which will reduce to Frightened 0 and be removed at the end of each target enemy's turn. Which will of necessity all happen before the start of your next turn, so all of the Frightened condition effects for those enemies are magical for the entire duration.
If the enemy gets a result of critical failure on the save, then that enemy becomes Frightened 3. This will be reduced in value at the end of each enemy's turn as normal for the Frightened condition. So the condition will be magical until the start of your next turn and then become non-magical for the remaining time that the Frightened condition lasts.
Oh, it's a Cursebound spell. No wonder I don't recall it. :P
Lets see... *skims text* I agree with Errenor's post.
If you want to apply the rules strictly, then:
If the enemy gets a result other than critical success and you choose a resistance, then the target loses that resistance until the end of your next turn. The effect will be magical in nature until the start of your next turn, and then will become non-magical for the duration of your turn - if that becomes important for some reason.
The loss of resistance has a duration higher than the spell duration, so it's an ongoing effect. As such it's not magical for it's entire duration.
If a target enemy gets a result of failure on the save, then that enemy becomes Frightened 1 - which will reduce to Frightened 0 and be removed at the end of each target enemy's turn. Which will of necessity all happen before the start of your next turn, so all of the Frightened condition effects for those enemies are magical for the entire duration.
This one's complex. If you consider that Frightened 1 has a duration of slightly less than 1 round (as the enemy will lose the Frightened condition before you get to play), it becomes a direct, magical effect. As there are effects that prevent Frightened to go down, like Remorseless Lash, you can sometimes hit the 1 round mark. In that case, the Frightened condition will be removed at the beginning of your turn when the spell ends (or if the spell is dispelled).
But if you consider that Frightened 1 has a duration of 1 round, as it would be its duration if you affect yourself (a bit stupid but still possible), then it's a direct, non magical effect that will last its duration independently.
I'd personally consider Frightened 1 to last 1 entire round, so I'd go for the non-magical, ongoing effect case.
If the enemy gets a result of critical failure on the save, then that enemy becomes Frightened 3. This will be reduced in value at the end of each enemy's turn as normal for the Frightened condition. So the condition will be magical until the start of your next turn and then become non-magical for the remaining time that the Frightened condition lasts.
As Frightened 3 has a 3 round duration, which is higher than the spell's, it's an ongoing effect. As such it's not magical and will last its duration independently.
Considering how all of this is weird I also consider there's a typo somewhere. In my opinion, the effect on resistances should be magical (as it doesn't seem to be a non-magical effect at all).