Sometimes you set out to build a deck and realize it was a Ragnaloardmon deck all along.
The Omni ACE Agumon from BT17 is being run strictly for the inheritable, which will allow you to DNA a Dinomon and RustTyrannomon to hopefully end the game.
The Metaltyrannomon is fantastic for helping you to keep your Dinomon on board while you get your RustTyrannomon ready for the next turn. But failing a Ragnaloardmon play, Dinomon can still take chunks out of security pretty fast on his own.
Mimi helps you get rookies out even faster so you can chain evo up with Tyranno X and Ryutaro. The X antibody is good for going from an Agumon straight into Tyranno X, but it's also great with Fortitude and helping your Ragnaloardmon get even taller. HPD because it's HPD.
The memory boosts can grab all of your Digimon, and the searcher Agumon can grab every Digimon except the Ragnaloardmon. The Guilmon is there to hopefully help you draw two cards with the Koromon, and he's a reptile.