Shatterbone

Shatterbone was a spell used by fight the undead.

Effects
When cast, a shimmering beam of gray light shots out from the caster's body in a single direction. The beam was immobile. The beam was particularly effective in fighting undead creatures. The bones of an undead creature exploded into dust. This was useful when facing skeletons, as the spell would render their remains into dust, thus preventing their bones from being collected and used once more.

Casting
In addition to verbal and somatic components, this spell required a material component, glass shaped as a polished gemstone. At one point the glass had to have been exposed to the light from the sun at noon.

History
This spell was known to be used by wizards of the Cult of the Dragon.