gundam trading card game booster box GD01 New Type Rising – Anime TCG.net Phantom Aria Booster Box brings the epic Mobile Suit battles to your collection Gundam Card Game Booster Box

Each placed card reduces the play cost.[On Play] De-Digivolve 1 1 of your opponent's Digimon, then, if DigiXrosing with 2 cards, delete 1 of your opponent's Digimon with a play cost of 5 or less.[All Turns] When this Digimon would be deleted, by returning 1 black level 4 or lower Digimon card from this Digimon's digivolution cards to its owner's hand, you may play 1 [SkullKnightmon] or [DeadlyAxemon] from this Digimon's digivolution cards without paying its memory cost

Must be Special Summoned by "Silent Swordsman LV5", and cannot be Special Summoned by other ways

Includes: 10 booster packs filled with powerful cards

From their part in the Abyss storyline, to the capable midrange strategy they employ, but I would argue it is their relevance to design as a whole that gives them such importance