I don't know about the yoni power, but I will reiterate that nearly all objects that have metalic ions in their systems will give off some measure of electromagnetic energy. This is why, for example, some sharks have been known to attack boats - they have electromagnetic radiation sensors and mistake the metal of a boat for a really big fish and are not so much attacking it but exploring it to see what it is (sharks explore with their teeth like baby humans
). Thus a keris blade will also give off some form of magnetic and electromagnetic radiation. So will a person, leaf, penny, euro, etc. I would be interested in knowing what the comparisons look like between different keris blades with different pamor types.