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Typically, this is where I talk about the Commander(s), which I will, but this idea began in reverse, so Bottoms up

Dangans are a military-themed archetype that utilizes Bullet Counters to use their effects, a Dangan without any ammo is a very weak monster

For this core combo to work, you need to either have Tri-Brigade Fraktall in your hand, or the ability to search the card using Fire Formation - Tenki

If the Dullahan was summoned using Lantern, then if they destroy Dullahan to get to Socuteboss, then you can just add back the Lantern to protect the Socuteboss from attacks and make another Dullahan next turn to repeat the process