Paralyzing

On a failed will save of 17 a creature is paralyzed and unable to attack or defend itself. Certain creatures cannot be paralyzed.

This effect can be found as a prefix on certain weapons.

(Long ago, this caused the normal paralyzed status which included the expected helplessness and auto-crits. It was changed for balance reasons, and now is Daze like in effect, as it prevents any action from the afflicted monster but does not cause auto-crit.)