This Is how I run the deck. If your meta has a Lot of decks that plays Digimon by effects, Switch Owen with Crimson Blaze.
Medievaldukemon Is a great subboss for the deck, but can be replaced with the new Rusttyrannomon When BT20 comes, but I think When that happens, maybe de trainigns can be switched with Garnet Memory Boost, but then your only options for searching Tamers Will be Digimon Liberator and Agumon.
I think Digimon Liberator Is the best way to cheat the Tamers, better than BT-11 Tyrannomon, but still Is up yo you.
Darktyrannomon can be replaced with BT-11 ir BT-14 Tyrannomon.