Reynard's offer was tempting, and Kyran had seriously considered trying out the relic. There was nothing to lose because he knew he could use it. However, using something that came from the Solis Clan was too risky. Moreover, Kyran knew that Lady Estrid was alive before The Fall and was likely among the few mages familiar with the Void magic energy. Her pretending not to know the relic would react only to a Void mage struck Kyran as suspicious. For all he knew, the relic could be a trap that Estrid and Lucian conspired in order to bait a mage that might possess the Void core.
Of course, Kyran might have been overthinking things, and Estrid probably did not know the relic could only be used by someone with Void magic. Regardless of the reason, he knew that winning the relic would pose more risk to him and the people around him than the benefits it would provide to his alchemy.
