"But how, wasn't the pendant enough to protect them?"
"The evoker must perform the ritual from the centre of the magic circle in order to absorb its balance: these represent totality and all existence. Inside, the star touches the circle with its five points. Each point represents one of the five elements of nature: water, air, earth, fire and ether. Thus set up, it represents the whole, and since there is nothing outside of it, nothing outside can harm it, no matter how malignant the creature summoned. This, once it arrives in your world, must be bound to the wills of the invoker, but the invoker cannot move from its position lest it alter the balance that protects it. So the need arises for another expert to complete the binding, marking the last symbol outside the circle to permanently
