Your search for "Unending Nightmare MACR-EN079" revealed the following:
Unending Nightmare - MACR-EN079 - Secret Rare - 1st Edition from Maximum Crisis 1st Edition, available at 401 Games Canada. Rarity: Secret Rare Card Text:You can pay 1000 LP, then target 1 face-up Spell/Trap Card on the field; destroy it....
Unending Nightmare - MACR-EN079 - Secret Rare - Unlimited from Maximum Crisis Unlimited, available at 401 Games Canada. Rarity: Secret Rare Card Text:You can pay 1000 LP, then target 1 face-up Spell/Trap Card on the field; destroy it. You can...