"One Piece" chapter 809 spoilers and predictions suggest that Ceasar's "poison gas weapon" could cause its targets to hallucinate.
It was revealed in the previous chapter that Beast Pirates Captain Jack the Drought made use of this new weapon.
By using the weapon, the crew was able to overpower the Mink Men - who are also equipped with electricity-related powers. After the Beast Pirates won, fans started to come up with their own speculations on what may have caused the crew to turn the battle's tide in their favor. After all, the weapon was previously owned by Donquixote Pirates Scientist Ceasar Clown.
Although Captain Jack managed to win the fight - in a great twist of events, it is believed that the Mink Men would have already been wiped out, had he not opted to leave the elephant Zou Island to save Donquixote Doflamingo, otherwise known as Heavenly Yaksha.
As shown in the previous chapters - specifically when Straw Hat Pirates Captain Monkey D. Luffy first stepped on elephant Zou Island, Jack's crew members do not have any claws that could have caused the shown claw marks. That said, "One Piece" chapter 809 spoilers and predictions suggest that Ceasar's weapon had hallucinogenic components and caused the Mink Men to attack each other. After all, the Mink Men are Beast Warriors that have huge claws.
Moreover, how Captain Jack got hold of the gas weapon caused some confusion among fans. That said, it is speculated that more light on how he got the device will be shed in "One Piece" chapter 809. According to Movie News Guide, the upcoming chapter could have some flashbacks about how Captain Jack and his crew traveled to Punk Hazard and scooped the remaining gas.
The hallucinogenic "poison gas weapon" might sound possible, the speculation must still be taken with a grain of salt. After all, this particular "One Piece" chapter 809 spoiler remains unconfirmed to date.