The Burnt World of Athas - 30 Days of Dark Sun 29: What’s your favorite promotional/rare item?

The 29th day of #30DaysofDarkSun is here and the question is "What’s your favorite promotional/rare item?"


This is a companion discussion topic for the original entry at http://www.athas.org/articles/30DaysofDarkSun-29-promo-rare-item