CREATING SCROLLS
To create a scroll, a character needs a supply of choice writing materials, the cost of which is subsumed in the cost for scribing the scroll—12.5 gp x the level of the spell x the level of the caster.
All writing implements and materials used to scribe a scroll must be fresh and unused. A character must pay the full cost for scribing each spell scroll no matter how many times she previously has scribed the same spell.
The creator must have prepared the spell to be scribed (or must know the spell, in the case of a sorcerer or bard) and must provide any material component or focus the spell requires. If casting the spell would reduce the caster’s XP total, she pays the cost upon beginning the scroll in addition to the XP cost for making the scroll itself. Likewise, a material component is consumed when she begins writing, but a focus is not. (A focus used in scribing a scroll can be reused.) The act of writing triggers the prepared spell, making it unavailable for casting until the character has rested and regained spells. (That is, that spell slot is expended from her currently prepared spells, just as if it had been cast.)
Scribing a scroll requires one day per each 1,000 gp of the base price.
Item Creation Feat Required: Scribe Scroll.
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.
Staffs 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 DC.
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).
由此可见，只有CL可以在范围内设定，DC则是恒定的
