This spell causes a helix like length of chain to materialize around a chosen target creature, whip around that being for 4d4+4 points of battering damage, and then vanish. It can affect creatures despite intervening magical barriers, but cannot penetrate magical shields or defenses that block 4th level spells.
The material component is a length of any sort of metal chain longer than the length of the caster's hand.
Notes: Granted by Ilmater, the One Who Endures, of the Forgotten Realms setting. This spell is found only in a few exceptionally rare tomes.