This deck has a good board control with the BT8 Metalgreymon and BT8 Blackwargreymon, the Tamer Nokia has returned in BT8 meta to support this deck. As long as the opponent does not end the game with OTK, Blackwargreymon can stay and win the game.
The most threat of this deck, which is recommended to put 3 or 4 copies, is DarkGaiaforce. With the ability to destroy multiple opponent's Digimon as long as the play cost adds up to 15, it does help to clean board or save the game many times, the best is the card is opened from Security.
There are some winning results for this deck in BT8 week-1, and hopefully it will be optimised further and become stronger to "at least" bring black colour to shine for the first time in DTCG (with X-antibody).