No fighter will ever reveal their strengths and weaknesses to their opponents, especially to an extraordinary opponent. Thus, it is a surprise that Chrollo will do just exactly that. Speculations, however, suggest that Chrollo's revelation of his powers might be one of the conditions to unleash his Nen abilities.

In chapter 352 of "Hunter X Hunter" titled "Troublesome," readers were quite confused as to what Chrollo's reasons are for revealing his powers and their conditions to Hisoka, who clearly is an extraordinary fighter.

Is he trying to stall in order to distract Hisoka and then escape, or is he planning some underhanded strategy to defeat his opponent?

According to speculations, this fighter might be buying time and using the crowd in order to get close to Hisoka so he can steal his powers.

On the other hand, a user named "shionoro" at the Manga Helpers forum says that Chrollo is trying to achieve one of these two things - stealing the Magician's power or he could be playing mind games with Hisoka. 

Other fans on Reddit, have varying opinions as well. Some say that Chrollo will clone himself before destroying Hisoka, while others are saying that Chrollo will make the audience his pawns and use them against the Magician.

One user named ApeMillz93 says that Chrollo will "activate black voice, activate bookmark to maintain ability to maintain black voice ability, then activates 'Convert to both hands' to touch someone with 'left hand'" to make this happen.

Some fans agree with this observation, saying that chapter 352 is already a confirmation that he will win this Deathmatch. As fans already know, the Deathmatch will result in the death of one of the contestants. So fans are wondering whether it will be the end of Hisoka or if he has something under his sleeves and will be able to overcome Chrollo.