Aggresive: Yes
Duration: level/2
Cumulative: No
Since psionics learned mind lock, they were investigating other uses
for locking some state of mind. Mental block is one of results. Poor victim
affected by this spell gets its mind blocked in such state that mind affecting
spells cannot be dispelled, only cured by psionic powers. Each dispel attempt
on psychic enchant has some chance to break mental block, but this consumes
whole power of the dispel if it succeeds.
See also:
dispel magic,
mind lock