The Magic Librarities

The length between the 2 diagonal edges of the Coastal Hornclaw is exactly the same as the width of a normal card. The extra card stuck to the Worthy Cause can be bent downwards and fits nicely onto the back of the card.

That top one could be faked. Just saying. Outside of being square cornered, a pair of scissors would do it.

Bottom one, purchased one similar last year for $200.