4 The Royal Scions 1 Castle Vantress 4 Irencrag Pyromancer 4 Improbable Alliance 4 Thrill of Possibility 3 Cavalier of Gales 4 Dreadhorde Arcanist 2 Kasmina, Enigmatic Mentor 3 Lava Coil 4 Temple of Epiphany 4 Steam Vents 7 Mountain 8 Island 4 Shock 4 Opt Sideboard 3 Mystical Dispute 2 Flame Sweep 3 Aether Gust 4 Fry 1 Narset, Parter of Veils 2 Negate