Quick-like. Condition. Continuous. You can target 1 Xyz Monster you control that is a "Number" monster with a number between "101" and "107" in its name or has such a monster as material, then activate 1 of these effects; Negate the effects of 1 face-up monster your opponent controls with equal or lower ATK until the end of this turn. Detach all material from that monster, then you can Special Summon 1 "Number" Xyz Monster from your GY.You can only use this effect of "Seventh Eternity" once per turn.