Level: Sorcerer 5, Wizard 5
Components: S
Casting Time: 1 swift action
Range: Personal
Target: Your breath weapon
Duration: 1 round
You exhale a cloud of poisonous gas mixed with starlight motes that gravitate toward the spellcasters and summoned monsters within the cloud.
For this spell to function, you must have a breath weapon, either as a supernatural ability or as the result of casting a spell such as dragon breath. When you successfully cast this spell, your breath weapon acts as a area dispel magic.
For each creature or object that fails its saving throw against your breath weapon and that is the subject of one or more spells, you make a dispel check against the highest level spell currently in effect on the object or creature. A dispel check is 1d20 + 1 per caster level (maximum +15) against a DC of 11 + the spell’s caster level. If that check fails, you make dispel checks against progressively weaker spells until you dispel one spell or until you fail all your checks. A creature’s magic items are not affected, and creatures and objects that rolled successful saving throws against your breath weapon are likewise not affected.
If a creature that is the effect of an ongoing spell (such as a monster summoned by monster summoning), is in the area and fails its saving throw against your breath weapon, you can also make a dispel check to end the spell that conjured the creature (returning it whence it came). For each ongoing area or effect spell centered within the area of your breath weapon, you make a dispel check to dispel the spell.
Spells are dispelled prior to the effect of your breath weapon being resolved.
You can choose to automatically succeed on dispel checks against any spell in the area that you have cast.
Source: Spell Compendium, page 67. Previously published in Draconomicon, page 78. Paragraph one of the descriptive text states that the dispel is a targeted one, but the text of paragraph two describes an area dispel in detail. Therefore, the word “targeted” in paragraph one has been changed to “area”. (A targeted dispel on everything in an area would be rather powerful for a 5th-level spell anyway.)