One of my favorite combos of this deck is to get Shadow Lich on the field with Masquerena. During the opponent's turn, Shadow Lich generates a token off a Quick Effect, which you can then use Masquerena's Quick Effect to go into a Link 4, which in this Extra Deck is either Knightmare Gryphon or Linkmail Archfiend, depending on the rest of your board state. With Linkmail, any of your other Extra Deck Monsters are protected from monster effects. Gryphon would potentially lock your opponent out of activating effects unless they can Link with Gryphon.
The rest of the deck is pretty straightforward in terms of its combos. D/D/D strongly excels at negating spell/trap effects, and the rest of the extra deck is designed to assist in monster negates.
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