Izzet Aggro
A Standard deck, by Cameron Sullivan
1st place at a tournament in Magic Arena on 2020-08-12

Maindeck:

Creatures
3 Dreadhorde Arcanist (Not currently legal in Standard)
4 Sea-Dasher Octopus (Not currently legal in Standard)
4 Spectral Sailor (Not currently legal in Standard)
4 Sprite Dragon (Not currently legal in Standard)
4 Stormwing Entity (Not currently legal in Standard)

Instants
2 Ionize (Not currently legal in Standard)
4 Lofty Denial (Not currently legal in Standard)
4 Opt (Not currently legal in Standard)
4 Shock (Not currently legal in Standard)
2 Unsummon (Not currently legal in Standard)

Legendary Artifacts
1 Embercleave (Not currently legal in Standard)

Sorceries
4 Crash Through (Not currently legal in Standard)

Basic Lands
6 Island
6 Mountain

Lands
4 Steam Vents (Not currently legal in Standard)
4 Temple of Epiphany (Not currently legal in Standard)

Sideboard:
3 Flame Sweep (Not currently legal in Standard)
3 Miscast (Not currently legal in Standard)
2 Negate
3 Scorching Dragonfire (Not currently legal in Standard)
2 Whirlwind Denial (Not currently legal in Standard)
2 Narset, Parter of Veils (Not currently legal in Standard)