Orin crushed the platinum key and vanished, gone to take the test to join the Midnight Inn. Lex withdrew his projection of the Amber Chaos Resin, and leaned back in his chair. He didn't have many pieces of the resin left, and each one was beyond extremely valuable.
The reason he was willing to use it for the creation of this bead was because Lex had taken a great interest in Karma and intended on using it long term.
Unlike arrays, which had once served him very well but ultimately reached a plateau in terms of strength, he felt like he could use Karma indefinitely. The reason arrays plateaued in strength, he eventually discovered, was because the characters that arrays were formed of were a sort of manifestation of certain aspects of specific laws.
One could even say that using laws was an upgraded and more potent version of using arrays.