- Madhouse Collection — Cards celebrating the Chaos Arena (released December 14, 2016).
- Forgotten Hero Collection — Cards celebrating the end of the Forgotten Hero's saga (released February 1, 2018).
- FrostSpark Collection — Cards that augment a wide variety of deck archetypes with unusual game interactions (released November 1, 2018).
- Tamriel Collection — Free collection of cards that expand existing mechanics (released December 6, 2019).
Other cards that are considered Promotional, but are not part of a specific set release:
- Monthly Cards — Cards earned by playing Ranked mode.
- Exclusive Cards — Cards that can only be obtained from rewards.
- Festival of Madness — Cards that were temporarily available from the store during the 2018 Festival of Madness event.