Dismissal
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Saving Throw: Will negates; see text
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This spell forces an extraplanar creature back to its proper plane if it fails a special Will save (DC = spell’s save DC - creature’s HD + your caster level). If the spell is successful, the creature is instantly whisked away, but there is a 20% chance of actually sending the subject to a plane other than its own.
Banishment
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Saving Throw: Will negates
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A banishment spell is a more powerful version of the dismissal spell. It enables you to force extraplanar creatures out of your home plane. As many as 2 Hit Dice of creatures per caster level can be banished.
You can improve the spell’s chance of success by presenting at least one object or substance that the target hates, fears, or otherwise opposes. For each such object or substance, you gain a +1 bonus on your caster level check to overcome the target’s spell resistance (if any), the saving throw DC increases by 2.
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Note that Banishment does not have the "see text" notation on the saving throw line. The spell says it is a more powerful version of dismissal, but does not note that it also uses the special saving throw mechanic.
So, does Banishment use the normal rules for saving throw DC's (plus the ability to boost the DC with items the target despises), or does it use the special save DC calculation that Dismissal uses?
