the expert at the card table first edition by S. W. Erdnase Expert At The Card Table

The price of this card is extremely variable and it is difficult to figure out, it can be found between 50 and 300, the range here becomes a price range

Mundane boons like a temporary toughness boost all the way up to powerful abilities like destroying several of your opponents permanents can be found stapled to new creatures across MTGs history, with new ETB effects coming out all the time

Creature tokens like a 1/1 White Soldier have 0 CMC

The Mewtwo alone makes every box opening feel like it has real stakes, and the lower box price means you can rip two of these for the price of one Prismatic Evolutions box

The disadvantage of returning to the hand during EF is not so much of a problem at the old dueling speed