Fey
The fey are small, forest-dweller, gnome-like people of small, slim, multi-colored bodies that transform into animals and beasts, adepts of nature-based magic.
They inhabit the forests down south, and exactly how deep into the forest they venture is unknown, but there is definitely a limit, as the deeper you go the denser and more dangerous it becomes.
The Fey cards mostly access the extra deck by the Transform/Transformed keyword, but they still have a few more powerful bosses and monument that are summoned via regular Rift Summoning. On the Main Deck, they have access to a variety of Scrolls that double down as powerful effects or sources of Hidden Knowledge.
Their main mechanics are: Transform / Transformed, Prone.