I could have potentially gotten a better chain in but god that startoff is so long and boring I'm satisfied with what I got now. Even though this looks really smooth I still wouldn't recommend it because it's pretty difficult to pull off and requires a good bit of attempts before you can understand how Idi vs m.ost works, but I will still give some instructions on how it works because you never know it might come in handy if ponos decides to make a remake of the remake of realm of carnage with m.ost instead of r.ost lol.
Anyways it's a bit harder to slip Idi onto m.ost like you can do with bahamut vs r.ost because idi got lower speed and m.ost has knockback and slow so stalling can be a bit inconsistent because you need to have correct spacing between m.ost and idi if you want to make idi hit m.ost. That's where talented riceball comes into play with his immunity to knockback and slow immune talent he can permastall a 100% m.ost when he's level 50 with defence talent maxed out. This allows you to put m.ost at the correct position so idi can hit him without getting hit himself. Even if Idi gets hit by m.ost you can let m.ost come closer so he stands in a favorable position allowing you to continue your chain. Freeze cannon also helps with allowing idi to hit m.ost but breakerblast can really save your run if croakley touches your base. Cadaver bear is potentially also replaceable he is here only for the infinite zombie hippoes because if you don't take them out quick enough they can potentially make the enemies push which could lead to croakley touching your base, but it seems like you can easily control them with manic island and bullet but still I brought cadaver bear just in case. That's about all I have to say I'm going to leave links down below to other strategies that are pretty good to use as well.
Jones' strat (starts at 2:22, Idi+slapstick+cadaver bear with strong up combo medium):
• Video
Anthony's strat (The 2020 meta):
• The Battle Cats | The Belated Priest (Cybe...
Apg' strat (Slapstick with strong up combo's, more consistent with a higher leveled slapstick):
• The Belated Priest (slapsticks+strong comb...