Originally available at BGG Con 2018. Currently available directly from Red Raven as part of Fan Box #1.
It contains expansions for Above and Below, Empires of the Void II, Eight Minute Legends, and Haven.
The Promos:
Above and Below: Mystic's Hut Promo Card (1 Card)
Empires of the Void II: General Event Cards (8 Cards)
Haven: Ancient Relics (6 Cards)
Eight-Minute Empire: Legends – Goal Cards (4 Cards)