Each Challenger Deck comes with a complete 60-card main deck and a 15-card sideboard, and is intended to be playable and competitive at a local level right out of the box. All cards will have been previously printed in Standard and are Standard-legal (until Fall 2020).
Main
2 Fae of Wishes 3 Kasmina, Enigmatic Mentor 1 Kenrith, the Returned King 4 Narset, Parter of Veils 2 Saheeli, Sublime Artificer 3 Sarkhan the Masterless 1 Ugin, the Ineffable
2 Banishing Light 3 Deafening Clarion 2 Drawn from Dreams 4 Fires of Invention 4 Omen of the Sea 2 Time Wipe
4 Interplanar Beacon 5 Island 2 Mountain 2 Plains 1 Steam Vents 3 Swiftwater Cliffs 1 Temple of Enlightenment 1 Temple of Epiphany 1 Temple of Triumph 3 Tranquil Cove 4 Wind-Scarred Crag
Sideboard
1 Ashiok, Dream Render 2 Devout Decree 1 Dovin's Veto 1 Dovin, Hand of Control 2 Fry 1 Mass Manipulation 2 Revoke Existence 1 Sarkhan the Masterless 3 Thirst for Meaning 1 Time Wipe