While many priests are taught a spell that enhances the physical regeneration
of a target, some are also taught the parallel spell, the curse of tarmalen.
This spell is very  similar to its cousin, except that instead of enhancing
physical regeneration for a while, this spell can halt it entirely. This spell
is taught as a means for a priest to bring harm upon those whose his gods, or
himself disfavors. Mastery of assistance and casters level have significant 
effect to the outcome of the spell.