Strong Binding Spell's Determination

What we're talking about here is how well a simple bond spell works. For those who aren't familiar with thaumaturgy, the goal of a Strong binding spell is to bind the target and stop him or her from doing certain things or making choices, good or bad, for themselves or for others. Like being tied, a spell that binds the target hurts them. No matter what spell is used, a strong magical bond is the most important part of this kind of aiming magic. The Law of Similarity and the Law of Contagion make it possible for a magical link to be a visual simulacrum that is linked to the target while the mental connection is being made. A magical link is strong if it has parts that are in line with both the Law of Similarity and the Law of Contagion.

This is not your average spell caster