These five Core Worlds promo cards were part of the Promo Pack A of the Dice Tower Season 11 Kickstarter. There is one card for each of the five Galactic decks.
All cards are suitable to be used with just the base game or with any combination of the Galactic Orders and Revolution expansions. The cards are I - Tower Fanatics (Infantry unit), II - Immolation Squad (Tactics), III - Le'Sav (Planet), IV - Mutabot (Robot unit), V - Tower of Infinite Dice (Prestige).
For more information, visit the BGG listing.