3 Massacre Wurm Token Decks Beware There's a category of cards in Magic that give creatures -2/-2, colloquially nicknamed 'Infests' based on the Onslaught card of the same name
The reason for this is that each pack type has a different set of cards, and to build a viable deck, you'll often need two of each card you want to include
But in return, it delivers a massive 330 damage instantly
Tinker can sacrifice Mana Crypt to stop the damage flow, and Paradoxical Outcome can return it to your hand
If you simply dropped all the cute little subthemes and focused on Y'shtola's strengths the deck becomes an absolute monster
Card Size is Different Paper Quality difference and Paper Thickness, but this depends on the set too I think, because they may change the paper stock that they use depending on cost of materials you can also ask a Pokemon Professor, they may have insight into fake cards entering the market and be able to give you pointers in spotting fakes