The presence of a Cygor is intensely unsettling to any nearby Wizards, for they know Cygors crave their souls above all else.
Any enemy Wizard that wishes to cast a spell whilst within 12" of one or more Cygors must first make a Leadership test. If this test is failed, the Wizard has lost their nerve and, should they fail to cast the spell (i.e., should their casting result be less than the casting value of the spell), the spell has been miscast and the active player immediately rolls on the Miscast table to see what fate befalls the unfortunate Wizard. If this test is passed, the Wizard can continue with their casting attempt as normal.