Big Mom Will Defeat Kaido

Currently we know that Kaido's big dream is to have the most powerful crew and not only that but a crew made completely of DF users or as he calls them "Gifters". This was achieved or in the process of being achieved through dealings with Joker AKA Doflamingo. He was selling Kaido the artificial Devil Fruits, that he required to create his army. Now after Doflamingo was defeated Kaido went into a drunked rage because his supply of artificial DFs had run out. This is an important part of the theory because the only person that can create the artificial DFs is Caesar Clown who happens to be with Luffy and the Strawhat Pirates(however he is actually not with them going to Whole Cake Island and this is important for this theory). I believe that Kaido knows that Clown is with the SH Pirates and I also believe that he would know they are going to Whole Cake Island. He is a Yonko after all and should be well informed on what the other Yonko are doing, I mean he did know that Whitebeard was going to Marineford and Shanks did know that Kaido would try and intercept him so it can be assumed that the Yonko keep a pretty good tab on the others. So at this point Kaido along with the other two Calamities(Jack is still underwater at the moment) would attack the SH Pirates but would have to infiltrate Whole Cake Island which happens to be the headquarters of another Yonko. This obviously would not go over well with Big Mom.

So my idea is that Kaido and his army will go to Whole Cake Island and be the break up of the Sanji/Purin wedding(I have no evidence for this but I'm sure Sanji won't get married unless it's to Nami at the end, and there would need to be some kind of distraction to do so) This will infuriate Big Mom as one of her Tea Parties got interrupted. This will cause a minor scuffle between the two in which Kaido injures Big Mom and leaves her basically for dead. Then he will find out that Caesar Clown is not with the Strawhat Pirates on Whole Cake Island and leave. This is where it gets a bit interesting. Chopper will save Big Mom's life as he is a doctor that will treat basically any patient. As Big Mom recovers I think that she will basically say that she wants to get revenge against Kaido for defeating her and interrupting her Tea Party. This is where she will accept an alliance with Luffy and they will go to Wano country where Kaido will be heading. This makes sense because Caesar Clown will be with the other SH Pirates who went to Wano country. It also makes sense because Kaido has an ally in the shogun of Wano country.

Some time will pass for Big Mom to recover and I think Lola will show up as well and so will Jewelry Bonney and they will reveal themselves to be daughters of Big Mom's there are theories out there especially about Lola being her daughter and there are some theories about Bonney as well just not as many of her being her daughter as well. After Big Mom is fully healed she along with the aforementioned people including the Strawhats and Germa66 will go to Wano to defeat Kaido.

At this point I feel it will be a huge battle larger than Marineford was but not as big as the war that will happen at the end of the series that Oda has said will make Marineford look small. Kaido will fight Big Mom, Zoro will fight the shogun(who I believe is one of the Calamities) Luffy and Law will fight the other Calamities as well. Kaido will have the upper hand against Big Mom until she starts using her DF powers against him and stealing his life away. Eventually she will gain the upper hand and kill him. He will be happy because he will finally be able to die and he also will have been the cause of the largest war to date in the One Piece universe(which we know he wanted from what he said)