This card works great within a Cyberdark Deck for performing Synchro Summons. Normal Summon "Cyberdark Horn", "Cyberdark Edge" or "Cyberdark Keel", equip this card, unequip it, and use the Cyberdark and "Dragunity Phalanx" to Synchro Summon any Level 6 Synchro Monster.
This card can be equipped with "Relinquished" if your opponent took control of it.
This card works great with "Dragunity Dux". Normal Summon "Dux" and fetch this card from the Graveyard, then you can use the effect of "Phalanx" to Special Summon itself for an instant "Dragunity Knight - Vajrayana". When "Dragunity Knight - Vajrayana" is Synchro summoned, equip a "Dragunity Phalanx" to it, making an instant Level 8 Synchro.