Core monsters like Custennin, Brothers, and Medraut generate field presence, while Isolde and Artorigus in the Extra Deck enable strong Xyz plays
[Main] Return all of your opponent's lowest level Digimon to the hand
Not only do you lose life, but you also have to be attacking with one or more creatures of a type that isnt all that common to begin with
Its only a matter of time before you can zap all of your opponents
If youre worried about losing Mondrak, you can turn it indestructible at the lost cost of three mana and by sacrificing two other artifacts or creatures, giving you an eternal token doubler thats difficult to remove
Here are some cards that I highly recommend to you, in order to combo off faster, and better: Fume Spitter (I love him but only in my starting hand) Diabolic Servitude (maybe, but recommend) Infernal Darkness (maybe, but always worth it) Sidisi, Undead Vizier (maybe...) Dread Return (maybe...) Pentavus (The only 7-drop allowed in this deck) Grinding Station (you have many artifact creatures then...) Some nice ways to tutor are:Dimir Machinations and Shred Memory