mtg avatar: the last airbender collector booster box Avatar Pack -sealed Special headliner cards appear in less than 1% of boosters. Avatar: The Last Airbender Collector

It's unlikely we'll see many more of these pop up, though

Original Base Set (1999) Obviously, the best Pokemon booster box of all time is the OG

This hasnt yet come up for me, and I suspect its a corner case that is more than offset by replacing Thassa with a card that helps in other places

What is the standard TCG card size

The following month after Wind Effigy was released saw the addition of Simorgh, Bird of Ancestry

However, this set does feature one 1st Edition card and twenty-one Shadowless cards that are noted below (Shadowless cards can be identified by the absence of a dark shadow along the right border of the image)