DexDorugoramon

Very similar to my own build but this build will inevitably run into a little bit of card draw issues.  I recommend running only one DeathX as two can clog your hand pretty easily and the deck has enough cycling to actually get to its one offs easily.  I also recommend cutting back on the DexDorugreymon to 1-2 copies instead.  This will give you room for up to three copies of Cool Boy.  This will let you dig through your deck quickly and give you more card draw and memory whenever you go into a Dex.  It also searches X Antibody trait option cards alongside the Digimon.  As for the Dorumon I recommend running 4 BT 16, 4 BT 9, 2 BT 7, and 3 BT 17 Dorumon split.  13 Rookies may seem like a little much but it does enable a small rookie Rush play line.  It also adds consistency.  I personally don't run the Tyrannomon but that's because I run a 2/2 split on DexDorugamon instead.  I recommend giving that a try.  You can also run a single copy of Eiji as another SoC tamer you can play.  It also gives alliance to your stack which adds a ton of pressure and DP.  It can help get over Magnamon X and other unaffected by card effect Digimon due to the collision rulings.  If that Digimon has blocker it doesn't matter if they are unaffected as Collision affects the player.  X Antibody as a two of is a really fun choice too.  I personally tried it myself but opted to move my copies elsewhere so I can run other tech cards.  Personally that is where I run my copy of Eiji and my copy second copy of Cool Boy.  Of course this is all just a recommendation to try out on your own time.  I just happen to play the deck myself and have been for a year straight now.