A rasped character is assailed by tiny particulants that wear down flesh and armour alike.
A rasped character takes 1d4 bludgeoning or magical bludgeoning, depending on the source, in damage at the beginning of its turn and that creature's AC is temporarily reduced by 2 for the duration.
Creatures that are immune to bludgeoning damage or made from a substance that would cancel this effect like a vapour or magma may be immune to this condition at the DM's discretion.