case of yugioh cards Yu-Gi-Oh! Chaos Origin Sealed (12x booster boxes) EU English Preo – Evolution TCG and the unique “Prismatic” Yu-Gi-Oh! 25th Anniversary Rarity Collection

Metalwork Colossus is a 10/10 artifact creature that costs 11 generic mana, but that cost is reduced by the total mana value of noncreature artifacts that you control

There have been fake cards graded before - [it] happens with rebacked cards in Magic: The Gathering, Nguyen says

Monsters: x10 [spoiler= Snakes and Nagas] "Boas, Snake of Destruir" EARTH Attribute / Reptile-type - Effect Monster / Level 4 Effect: When this card is Summoned, target one card your opponent controls: destroy this card, and if you do, banish the target

Creatures (8) Lands (20) Spells (32) This deck organically plays many of the interactions I mentioned