The LAW OF ASSOCIATION:
If any two patterns have elements in common, the patterns interact "through" those common elements, and control of one pattern facilitates control of the other(s) depending (among other factors) upon the number of common elements involved. This is a very important law, up there with the LAW OF KNOWLEDGE.
Having an accurate physical or mental representation of something facilitates control over it. This one is fairly obvious in it's usage - having a model, picture, or other representation of your target (like a voodoo doll) gives you power to effect the target. Lookalikes are alike.
The LAW OF CONTAGION:
Objects or beings in physical contact with each other continue to interact after separation. Everyone you have ever touched has a magical link with you, though it is probably pretty weak unless the contact was intense and/or prolonged or repeated frequently. Magical power is contagious. Naturally, having a part of someone's body (nails, hair, spit, etc.) gives the best contagion link.
The LAW OF NAMES:
Knowing the complete and TRUE name of an object, being, or process gives one complete control over it. This works because a name is a definition (yes, even "Harold", "Marie", "Kunte", and "Jasmine" were at one time) as well as a contagion link, and an association (if you call something the same name over and over, that name becomes associated with the thing). This also works, because knowing the complete and true name of something or someone means that you have achieved a complete understanding of it's or their nature. This is why, in most pre-industrial cultures, people are given "secret names", as well as "public names", and why the sharing of a secret name is such an act of trust - because the secret name is considered to be very close to, if not identical with, the person's true name.
The LAW OF PERSONIFICATION:
Any phenomenon may be considered to be alive and to have a personality - that is, to "be" an entity or being. Anything can be a person. Most weather mages personify the winds and the clouds, for example, and thus find focussing their magic on the atmosphere much easier to do.
The LAW OF INVOCATION:
It is possible to establish internal communication with entities from either inside or outside oneself, said entities seeming to be inside of oneself during the communication process.
The LAW OF EVOCATION:
It is possible to establish external communication with entities from either inside or outside oneself, said entities seeming to be outside oneself during the communication process.
The LAW OF IDENTIFICATION:
It is possible through maximum association between elements of oneself and those of another being to actually become that being, to the point of sharing it's knowledge and wielding it's power. This is the law that controls most lengthy or permanent possession phenomena.