While magical summons and banishing spells are powerful tools, they are not without remedy. One such remedy is the anti-summons spell called heavy weight. This spell binds the target with magics that prevent summons. This magic is strong enough that the target will not be able to cast most summon spells himself. Sometimes the magic can be defeated as it is not 100%, but currently this is the only anti-summoning spell that is well known. There are rumors that somewhere there are scholars who even now, try to find the right incantations to improve this spell, just recently there has been a discovery of a spell that will remove heavy weight before it wears off. . .