Lin Yuan pondered for a moment and gave up on feys that could learn Transformation Possession to attach onto the body just like Xin Ying's contracted fey. Transformation Possession and Tool Transformation were both very rare, and one could only hope to encounter such exclusive skills.
If Lin Yuan was to enhance feys in huge quantities, it would be possible to produce a Bronze fey that awakened the Transformation Possession exclusive skill. However, given Lin Yuan's current spiritual energy, he wouldn't be able to form a contract with a Bronze fey. His remaining spiritual energy wouldn't be enough.
Therefore, Lin Yuan knew that he could only choose a source-type lifeform with great defense if he wanted to increase his survivability.
Nevertheless, source-type lifeforms were extremely rare, and every source-type lifeform had different abilities. Hence, source-type lifeforms that could be used for protection and defense were also things that one could only hope to encounter.
