Rules: Scroll/Wand DCs, Disbelieving Illusions.

[Jack Napier]

DCs for Scrolls/Wands:

Saving Throws Against Magic Item Powers

Magic items produce spells or spell-like effects. For a saving throw against a spell or spell-like effect from a magic item, the DC is 10 + the level of the spell or effect + the ability modifier of the minimum ability score needed to cast that level of spell.

Staves are an exception to the rule. Treat the saving throw as if the wielder cast the spell, including caster level and all modifiers to save DCs.

Most item descriptions give saving throw DCs for various effects, particularly when the effect has no exact spell equivalent (making its level otherwise difficult to determine quickly).

so.... dc for spells cast from these items are:

LEVEL / DC
0 = 10
1 = 11
2 = 13
3 = 14
4 = 16
5 = 17
6 = 19
7 = 20
8 = 22
9 = 23


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Silent Image Disbelief:

Saving Throws and Illusions (Disbelief)

Creatures encountering an illusion usually do not receive saving throws to recognize it as illusory until they study it carefully or interact with it in some fashion.

A successful saving throw against an illusion reveals it to be false, but a figment or phantasm remains as a translucent outline.

A failed saving throw indicates that a character fails to notice something is amiss. a character faced with proof that an illusion isn't real needs no saving throw. If any viewer successfully disbelieves an illusion and communicates this fact to others, each such viewer gains a saving throw with a +4 bonus.