Not only will you want to make use of D/D/D Gust King Alexander , which can become a non-Tuner Synchro Monster for Crystal Wing Synchro Dragon, youll want to use the new D/D/D Cursed King Siegfried as well
But keep in mind, it's only current characters that lose their strength.
As a Mythical Pokmon that controls nightmares, its dark, edgy aesthetic gives it a timeless appeal that spans generations of players
In your turn, when you Digivolve it into a Composite Digimon or a multi-color Digimon, you may spend 2 less resources to do it and, like so, set up your turn a lot more easily
Anyway, in purely MTG terms, Marrow-Gnawer is the perfect rat commander
As an added bonus, one of the best Link Monsters ever released, Crystron Halqifibrax is a part of the Archetype