2 Machine monsters, including at least 1 "Cyber Dragon"This card's name becomes Cyber Dragon while on the field or in the GY. During each Battle Phase, if this card has not declare an attack (Quick Effect): You can target 1 Machine monster you control with 2100 or more ATK; for the rest of this turn, that monster gains 2100 ATK/DEF, also neither player takes ant battle damage from battles involving this monster. You can only use this effect of "Cyber Dragon Sieger" once per turn.