6 Island
6 Mountain
4 Steam Vents
4 Temple of Epiphany
2 Brazen Borrower // Petty Theft
2 Claim the Firstborn
4 Crash Through
4 Dreadhorde Arcanist
4 Opt
4 Riddleform
3 Shock
3 Spectral Sailor
4 Sprite Dragon
2 Starlit Mantle
4 Stormwing Entity
1 The Royal Scions
3 Unsummon
Sideboard:
3 Aether Gust
4 Lava Coil
2 Narset, Parter of Veils
3 Negate
3 Whirlwind Denial