Mystpillar Isle

From Qwiki

Mystpillar Isle is one of the most unusual and feared places on Moridia. It is the only place in the world where certain critical components need for conjuring and sorcery within Moridia can be found. All young wizards who wish to study the art and become proficient must eventually travel to Mystpillar Isle to obtain these components for themselves. They cannot be bought or traded or they will not be effective for the mage in question to use.