Anyone have any advice as to how to decrease the miss-cast chance of a scroll.
The caster is 3 levels lower than the caster level of the scroll. I believe that's only a 15% miss-chance. But it would still be an expensive failure so I'd rather better my odds. (Does the scroll get wasted if the casting fails?)
Rules:
If the user meets all the requirements noted above, and her caster level is at least equal to the spell's caster level, she can automatically activate the spell without a check. If she meets all three requirements but her own caster level is lower than the scroll spell's caster level, then she has to make a caster level check (DC = scroll's caster level + 1) to cast the spell successfully. If she fails, she must make a DC 5 Wisdom check to avoid a scroll mishap. A natural roll of 1 always fails, whatever the modifiers. Activating a scroll is a standard action (or the spell's casting time, whichever is longer) and it provokes attacks of opportunity exactly as casting a spell does. If the caster level check fails but no mishap occurs, the scroll is not expended.
As long as you don't have a mishap, the scroll is not used up.
FAQ
Scrolls: If I fail my caster level check to activate a scroll, but don't have a mishap, is the scroll used up?
No.
Update: Page 490—In the Activation section, in the first paragraph after the bullet points, add the following sentence: “If the caster level check fails but no mishap occurs, the scroll is not expended.”