Quote Originally Posted by Splash! View Post
He wouldn't be able to use his conjured chain on anybody else, but his specialization ability isn't tied to the spiders. He could always move on to mastering other Nen types besides conjuration.
Except his specialization ability only works when his eyes glow, and with the Spiders dead, he'd have a hard time working himself up into the emotional frenzy needed to make them work.