Once per turn, you can also Xyz Summon Xyz Armor Fortress by using 1 Rank 3 or 4 Xyz Monster you control. (Transfer its materials to this card.) Cannot be used as material for an Xyz Summon while it has material. Once per turn: You can detach up to 2 materials from this card; add Armored Xyz cards with different names from your Deck to your hand, equal to the number detached. If a monster equipped with this card battles a monster, any battle damage it inflicts to your opponent is doubled.