Usopp vs Green Bull did we see this coming??

I think to be honest that, this might not be one of the best theories  that i've heard of, but given the present situation, and the arguments for, i do believe that this theory might actually have some credibility.

Green bull, the recently revealed navy admiral flexed on the likes of king and queen,not only defeating them but stealing their life force as well. 

His devil fruit ability seems to be plant based, and thus makes it unique in the entirety of the series, as it  might actually be a mythical zoan devil fruit. having a plant based ability is uncommon, and though ryo, observation haki, as well as conqueror's haki could prove useful, green bull could use non standard ways, to not only attack the strawhats, but to also take down the alliance in one fell swoop.

POISONOUS MUSHROOM SPORES:

green bull seems to be the type of guy who would get the job done, irrespective of the number of sacrifices that might be needed to accomplish this. attacking the alliance with toxic spores could prove troublesome, and as a result many might fall sick. it might come down to chopper and law to dosomething, or usopp whho is a botanist to  come up with a counter  to his poisonous spores. No  matter how you look at it, a knowledge of botany would be needed to counter greenbull's poison attack.

NON STANDARD PLANT BASED ATTACKS

it is true that the strawhat alliance, when coupled with the supernova have  the  overall strength neccessary to stop any attack thrown at them. However they might not have the endurance requires. Green bull has been shown to have tha capacity to sap away his opponent's life force. Not only that but he seems quiute capable of photosynthesizing, which means, he might almost never run short of energy during the day. with him mounting a continual assault on the alliance, a deep knowledge of botany might be needed, to provide the appropriate counter measures to his  attacks. for instance '' how do we stop him from photosynthesizing? nami make zeus to grow and produce thunder clouds''. 

Usopp might end up having the most important role to play as he might be the only one who couls know green bull's weaknesses , as well as be able to counteract green bull's attacks using pop green.

    

With all that said,  all that remains is for us to wait and see what oda has in stall for us as the battles continu. One thing we can be sure of that, from here on , usopp will only get stronger.