Lyrilusc - Assembled Nightingale

“2 or more Level 1 monsters This card gains 200 ATK for each Xyz Material attached to it. This card can attack directly. While this card has Xyz Material, it can attack a number of times each Battle Phase, up to the number of Xyz Materials attached to it. Once per turn, during either player's turn: You can detach 1 Xyz Material from this card; until the end of this turn, "Lyrilusc" monsters you control cannot be destroyed by battle or card effects, also you take no battle damage.”