Once per turn, you can either: Target 1 face-up 'Vylon' monster you control; equip this card to that target, OR: Unequip this card and Special Summon it in face-up Attack Position. While equipped by this effect, if the equipped monster destroys an opponent's monster by battle: You can target 1 Level 4 or lower 'Vylon' monster in your Graveyard; Special Summon that target. (A monster can only be equipped with 1 Union Monster at a time. If the equipped monster would be destroyed, destroy this card instead.)
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