I noticed some spell casters say that you need to provide biological samples in order for spells to work. This is true? Do I need to provide my biological materials such as nail clippings, blood and hair in order to have my spell work? Ashra doesn't ask for biological samples but there are some spell casters who claim spells will not work without it. Are they just scaring me or should I only be purchasing spells from spell casters who ask for biological materials?