Another example would be to create a protective ward by combining the four elements into a unity, which would be impervious to anything made of the elements. Other parallels are the microcosm through the macrocosm, macrocosm through the microcosm etc. A magickal effect can divide itself into two complementary parts, which remain in metaphysical contact after they have separated. A simple use is to enchant an object, and break it apart. The two halves will affect each other, and if one is changed the other will change too.
Extremes are bad.
Something many mages forget. Technomancers, Marauders and Nephandi are clearly unbalanced, and hurt themselves and others by their imbalance. But Tradition mages also often forget it. Some traditions place much emphasis on balance, especially the Akashic Brotherhood, Dreamspeakers, Order of Hermes and Celestial Chorus. Impossible to know everything.