Kayla, Sheppard of Chaos

Cascade

Mooo-nifest - Whenever a player casts a creature spell, that player exiles it, then manifests the top card of their library execpt the manifested card is a 3/3 green Ox. Then that player puts
the exiled card at the bottom of their library.

Chaos Reigns Supreme! - At the beginning of each upkeep, all facedown cards get passed to the player to its controllers left.