Full Armored Crystalzero Lancer
3 Level 6 WATER monsters
You can also Xyz Summon this card by using a Rank 5 WATER Xyz Monster you control as the Xyz Material. (Xyz Materials attached to that monster also become Xyz Materials on this card.) This card gains 500 ATK for each Xyz Material attached to it. If this face-up card would be destroyed, you can detach 1 Xyz Material from this card instead. Once per turn: You can detach 1 Xyz Material from this card; all face-up monsters your opponent controls have their effects negated until the end of this turn.