Cosimo Malaspina was a famous mage and the teacher of Alzur. According to Ortolan, Malaspina and Alzur were the creators of witchers.
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In The Witcher 3: Wild Hunt[ | ]
Malaspina is mentioned as Malaspin in the Laboratory notebook by Ireneus var Steingard, who cruelly experimented on the witcher Kiyan and compared himself to creators of the witchers.