Cobaltas's Thunderclap
(Evocation)

Range:  0
Components:  S
Duration:  Instantaneous
Casting Time:  2
Area of Effect:  20-foot radius half circle
Saving Throw:  Special

To cast this spell, the wizard raises his hands above his head, spread wide. He then brings them down and in to meet with a tremendous clap. This affects all within 20 feet and in front of his as a thunderflash (q.v.) but deafens, and does not blind (spellcasters have a 20% chance to miscast spells with a verbal component), and dispels silence, not darkness.

