Seventh Eternity (LED9-EN007) - Legendary Duelists: Duels From the Deep 1st Edition

Target 1 "Number" Xyz Monster you control that has a number between "101" and "107" in its name, or 1 Xyz Monster you control that has any such monsters as material, then activate 1 of these effects;
• Negate the effects of 1 monster your opponent controls with ATK less than or equal to the targeted monster's ATK, until the end of this turn.
• Detach all materials from the targeted 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.