Wand Cores

"When making a wand the core is an important piece, often playing a key role in compatibility between wand and wizard among other things. Only magical creatures, and one case plants, are able to be used to make a wand core. This is due to the fact that only magical creatures and/or magically created creatures are able to amplify the magic a witch or wizard would channel through the wand, or in some cases interfere if the area of magic goes against the nature of the creature in question. Though all magical creatures can potentially be used to make a core only a handful of them are used, this is due to either rarity or lack of usefulness when considered. Ex. A Flobberworm's mucus is a potential core, but aside from Potions it has absolutely no benefit. Thus wandmakers only use those whose benefits are worthwhile for a wand and, in most cases, do not have moral or legal ramifications tied to them. I am sorry Astrid Lenchwort, I am not turning your beloved owl 'Vincie' into a wand core. He is not special, so get over it already, thank you."