Non Detection + Improved Invisibility VS See Invible, Invisibility Purge, True seeing etc?

[ElyasRavenwood]

If i have my wizard cast Improved invisibility and then non detection on himself,

will the Non Detection spell be proof against a detect invisibility spell, an invisibility purge-or a true seeing spell?

Thanks

[Alitan]

Might work vs. See Invisibility; is Invisibility Purge a divination or a transmutation spell? I suppose True Seeing IS a divination spell, but I'm dubious about the application. Plus anybody using True Seeing can probably sweep the (very low-level) 19 DC check to overcome the nondetection.

I've usually allowed people to research True Seeing countermeasures, and counter-countermeasures to provide better True Seeing in response. I don't like one divination spell nerfing the entire school of illusion magic.

YMMV

[Craig Mercer]

Yes vs Detect Invisible.
No vs Invisiblity Purge, because it is an evocation spell, not a divination spell, and does not 'detect' the target, it merely removes Invisibility from use.
Reading Non-Detection, I would say it also works vs True Seeing, but the user of True Seeing will make their save usually.
And even the Detect Invisibility will get a save vs the Non Detection spell.

[ElyasRavenwood]

Thanks for your answers.

[Diego Rossi]

Quote:

Nondetection

School abjuration; Level ranger 4, sorcerer/wizard 3

Casting Time 1 standard action

Components V, S, M (diamond dust worth 50 gp)

Range touch

Target creature or object touched

Duration 1 hour/level

Saving Throw Will negates (harmless, object); Spell Resistance yes (harmless, object)

The warded creature or object becomes difficult to detect by divination spells such as clairaudience/clairvoyance, locate object, and detect spells. Nondetection also prevents location by such magic items as crystal balls. If a divination is attempted against the warded creature or item, the caster of the divination must succeed on a caster level check (1d20 + caster level) against a DC of 11 + the caster level of the spellcaster who cast nondetection. If you cast nondetection on yourself or on an item currently in your possession, the DC is 15 + your caster level.

If cast on a creature, nondetection wards the creature's gear as well as the creature itself.

The warded creature/object is the one to make the St when the spell is cast.

The user of see invisible/true seeing will have to make a Caster level Check against a DC of 11+CL or 15+CL, so the DC isn't easy at all.