Interstellar Void (Oracle Focus Spell) Questions

[Bast L.]

So, the saving throw says "Fortitude", not "Basic Fortitude" as most spells with basic saves do, while the damage section mentions a basic fortitude save.

I'm wondering, how exactly does the spell work?

Possibility 1, fort save vs effect, basic fort save vs damage:

You (the target) make an initial fort save versus the effect, if you fail the effect is on you, you're fatigued, and you make a basic fortitude save each time it would cause damage, including the initial damage, and whenever it's sustained. Whether you make any of those basic saves, the effect is still on you, so you're still fatigued.

Possibility 2, basic fort save vs effect and damage:

You (the target) make basic fort saves vs both initial effect/damage, and any time it's sustained. If you make the basic save on any round, is the effect on you still? If you crit succeed on the basic save? Does it matter if you make the save on the initial, or sustain round?

Possiblity 3, fort save vs effect and initial damage, basic save for sustain damage:

You (the target) make a fort save vs the effect and the initial damage (not sure what a non-basic save vs damage is, no effect? Crit fail, no doubling?), but make basic saves vs each sustain damage, which does not remove the effect (and thus the fatigue?).

Any thoughts? Other possibilities? I think it's possibility 1, but not entirely sure.

[Dubious Scholar]

Pretty sure that the fatigued effect is automatic and offers no save. The damage is a basic fort save against each tick.

[Bast L.]

Yeah, that looks like it may be the way of it.