You don't have to use the "Dragunity" monster equipped to this card to activate its effect. You could also use other equip cards.
Equip this card with "Dragunity Brandistock", and another equip card. Send the second equip card for this card's effect. Now it would have double the ATK and be able to attack twice.
In addition, if you equip this card with "Dragunity Pilum", you can attack directly for 1900 damage.
Use a Level 4 "Dragunity" monster such as "Dragunity Dux" with "Dragunity Phalanx" to Summon this card, then re-equip it with "Phalanx", Summon "Phalanx" and Synchro again for a Level 8 Synchro Monster.