Permanency

This spell affects the duration of certain other spells, making the duration permanent. 

The spells upon which a personal permanency will be effective are:

The magic-user casts the desired spell and then follows with the permanency spell. Each permanency spell lowers the magic-user's Constitution by 1 point. The magic-user cannot cast these spells upon other creatures. 

In addition to personal use, the permanency spell can be used to make the following object/creature or area effect spells lasting:

The former application of permanency can be dispelled only by a magic-user of greater level than the spell caster was when he or she initially cast it. 

The permanency application to other spells allows it to be cast simultaneously with any of the latter when no living creature is the target, but the permanency can be dispelled normally, and thus the entire spell negated.

There is only a 5% chance of the spell caster actually losing a point of Constitution if the spell is cast upon a non-living thing.