Your search for "Numbers Overlay Boost SHSP-EN071" revealed the following:
Numbers Overlay Boost - SHSP-EN071 - Common - 1st Edition from Shadow Specters 1st Edition, available at 401 Games Canada. Rarity: Common Card Text:Target 1 "Number" Xyz Monster you control that has no Xyz Material; attach 2 monsters from your...
Numbers Overlay Boost - SHSP-EN071 - Common - Unlimited from Shadow Specters Unlimited, available at 401 Games Canada. Rarity: Common Card Text:Target 1 "Number" Xyz Monster you control that has no Xyz Material; attach 2 monsters from your hand to...