• Similarly, this card can be used with "Machine Duplication" in a Machine Deck together with "Solidarity" to further boost the attack of the equipped monster.
  • Equip this card to "Cyber Dragon" while controlling three copies of "Proto-Cyber Dragon" and another "Cyber Dragon" on the field for a 5300 ATK monster.
  • This card is deadly with Harpies, because cards like Harpie Queen and Harpie Channeler make it possible to have five monsters on the field with the same name. Equip "Chthonian Alliance" to a "Harpie Queen" while there are 4 other monsters treated as "Harpie Lady" on the field for an ATK of 5100 for the "Harpie Queen".
    • While 3 "Harpie Lady 1" cards are on the field add 900 to gain a total of +6000 ATK for the "Harpie Queen".
  • Use Inferno Reckless Summon to bring 3 Command Knights when one is Special Summoned, then equip this card to one of them. Your opponent can't attack any Knights, but the equipped one shall get 4000 ATK points! (1200 for each Knight, 800 for Chthonian Alliance and the other two copies)

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