Illusion Wiki is another magic related wiki created on April 18, 2011 by Joseph Treter, owner of Illusions Illuminated. The wiki states that it was "started to provide a single wiki for magicians and illusionists".
It has since copied hundreds and hundreds of articles from this wiki, MagicPedia, which was created in October of 2007.
While text on wikis are generally available under a free license, which means anyone is welcome to reuse that content as long as they provide attribution back to the original creators and as long as both wikis use the same license, it is typically frowned upon in the wiki community to copy large quantities of text from an already established wiki.
Taking such a large percentage of articles is not what most would refer to as "sharing". When another wiki covers the same topic as another established wiki, it can discourage collaboration and negatively impact the wiki in which it was copied.