As the deck does lock its user into only summoning "Archfiend" monsters form the Extra Deck, the two Tuner "Archfiend" monsters "Weiss, Lightsworn Archfiend" and "Shipping Archfiend" can be useful additions to the deck - enabling the summon of cards like "Chaos King Archfiend", "Chaos Archfiend", "Thought Ruler Archfiend" or the "Red Dragon Archfiend" monsters
(If this card is your chosen companion, you may put it into your hand from outside the game for as a sorcery.) Abilities you activate that aren't mana abilities cost less to activate
The ability will trigger again at the beginning of the cards owners next upkeep
That said, the whole enterprise has helped create a narrative that Wizards of the Coast values collectibility over playability and is pushing MTG towards an overload of special crossovers, product fatigue and high-price special releases
Sinkhole costs two Black mana and destroys a target land
Digi-Jewels - Your deck had the 12 Digi-Jewels in it