If you pick up a Core Set 2020 Bundle, inside you'll find a very special promo version of Chandra's Regulator.
For the First time with the release of Core Set 2020 in July 2019, a Foil Promo was inserted in a Bundle.
Core Set 2020 Bundle Contents:
10 Core Set 2020 booster packs
20 foil land pack
20 regular land pack
2 reference cards
1 foil promo card
1 oversized Spindown life counter
1 reusable card storage box
Made in USA, Die manufactured in China
Core Set 2020 Bundle product shot
Core Set 2020 Promos and Packaging, Card Preview
Throne of Eldraine Promos, Card Preview