Full Armored Dark Knight Lancer (Quarter Century Secret Rare)

3 Level 7 monsters Once per turn, you can also Xyz Summon "Full Armored Dark Knight Lancer" by using 1 Rank 5 or 6 Xyz Monster you control. (Transfer its materials to this card.) Gains 300 ATK for each material and Equip Card it has. Once per turn: You can target 1 "Xyz" card in your GY; add it to your hand. Once per turn, if an Equip Card becomes equipped to a monster you control (except during the Damage Step): You can attach 1 monster your opponent controls to this card as material.