Ooh, I can answer this one. ^_^ It's from 
Kurapica's battle with Ubogin, one of the Genei 
Ryodan. The episode number is 56. ^_^  From the 
look of it, it's from the very end of the 
fight... or close to it. Looks like the 
Judgement Chain is the one being used.

Very nice cel! I can't wait for my latest HxH 
cel to arrive. ^_^ I love the last TV eps... the 
animation is so gorgeous. Mmmm.