Khelben's dweomerdoom

Khelben's dweomerdoom was a powerful arcane abjuration spell that countered an opponent's spell before it was cast.

Effects
This spell removed the most powerful spell currently prepared and memorized by the caster's target.

Components
In addition to verbal and somatic components, this spell required as a material component a crystal lens worth at least 1,000 gp to cast. The lens could be reused.

History
This spell was developed by Khelben Arunsun of Waterdeep.