Seal of Destruction

One use only. 
Once activated this seal can drain the knowledge of one spell from the mind of an enemy Wizard
The seal has the same effect as a Dispel scroll. In addition, roll a D6. On a result of 4+ the spell is removed from the caster's mind and he can no longer cast it. Spells cast from a Bound item will only be removed on the result of a 6.