I think its supposed to be a Yu-Gi-Oh reference and it looks like he uses it in an attempt to block a projectile, but there is no reason to believe it would only work on contact. the other question becomes how the ability is restricted? Are the cards single use? must they be randomized and drawn from? Should Vampires gain the Hatsu of those they drink from?? PROBABLY?
Hisoka x Hinrigh as I see it
Post mortem nen is fucked.
Hisoka used post mortem nen to revive himself, but only so he could pursue Chrollo anew for revenge or pleasure, however you interpret his obsession. Basically what I'm saying is that Hisoka refused death to pursue his own selfish goal.
Contrast this with Misha Hao.
Her ability post-mortem serves entirely to protect the Xi-Yu family on their climb to the top. While Hisoka rebelled agienst his death for himself, Misha "accepted" hers for the organization.
This contrast tells us a lot about Misha and a little more about post mortem nen; namely, how it interprets goals and intentions differently. I would say that Hisoka's goal is to survive, but only by the skin of his teeth. While Misha views her life as less important than avoiding suspicion on the Xu-Yi family. These aspects of their characters are explained beatifully by how nen interprets their wishes.
