Zala's Disruption

When invoked, this powerful incantation erases spells from the memory of any spell-using character or creature within the stated area of effect. Anyone with memorized spells must make a saving throw vs. spell or instantly lose 1d4 random spells. Anyone failing the first saving throw must roll again; failure results in another 1d4 spells instantly lost and another saving throw, continuing until no spells remain or until a saving throw is successful.

The caster and any allies are also subjected to the effects of Zala's disruption, although the caster himself gains a +2 bonus to his saving throws (+3 if an abjurer specialist wizard). Any disrupted magic takes the form of a spectacular cloud of shimmering light that hovers in the area for several hours before fading from view.

The material component is a diamond worth no less than 5,000 gp, which is shattered in the casting of the spell.

Notes: Very rare spell. Known to be in the Book of Zala (the Lakharemtolma Zalarem). (Updated from Dragon Magazine.)