A small child reads in a science book during the beginning of the nuclear age that Lead is a material that is able to block radiation. As it happens, magical effects propagate via a class of subatomic particles, thus other materials---gold, aluminum, etc---share this immunity and in any amount. HOWEVER, different materials have differing immunity effects in accordance with their degree of radiation shielding (see standard charts). Lead, gold, and several other materials' anti-magical properties were rapidly explored after Aflareight's discovery. L