What is going on?
How did Chrollo get his powers back?
Waaaah Hisoka vs Chrollo in the heavens arena is SO hype though. I was always hoping for a return to see what awaits at the top.
Edit - Hmm I always thought Hisoka-Chrollo would be part of the HxH endgame. I wish this fight had more build up and anticipation towards it; being out of the blue is rather unfitting. However Togashi is one to go against normal convention; I really hope this isn't a case of him rushing to finish the series a la YuYu Hakusho.
There was a nen eraser on Greed Island. They didn't show it but he must have removed Kurapika's chain from Kuroro.