Sultai Midrange
A Standard deck, by Mark Jacobson
1st place at a tournament in Magic Arena on 2020-03-28

Maindeck:

Creatures
4 Cavalier of Thorns (Not currently legal in Standard)
4 Hydroid Krasis (Not currently legal in Standard)

Instants
3 Aether Gust (Not currently legal in Standard)
4 Growth Spiral (Not currently legal in Standard)

Legendary Creatures
2 Polukranos, Unchained (Not currently legal in Standard)
4 Uro, Titan of Nature's Wrath (Not currently legal in Standard)

Legendary Planeswalkers
3 Nissa, Who Shakes the World (Not currently legal in Standard)

Sorceries
3 Casualties of War (Not currently legal in Standard)
4 Thought Erasure (Not currently legal in Standard)

Basic Lands
3 Forest
2 Island
2 Swamp

Lands
4 Breeding Pool (Not currently legal in Standard)
4 Fabled Passage (Not currently legal in Standard)
4 Overgrown Tomb (Not currently legal in Standard)
3 Temple of Malady (Not currently legal in Standard)
3 Temple of Mystery (Not currently legal in Standard)
4 Watery Grave (Not currently legal in Standard)

Sideboard:
1 Aether Gust (Not currently legal in Standard)
1 Disdainful Stroke
2 Disfigure (Not currently legal in Standard)
2 Mystical Dispute (Not currently legal in Standard)
1 Negate
1 Vraska, Golgari Queen (Not currently legal in Standard)
1 Cry of the Carnarium (Not currently legal in Standard)
2 Epic Downfall (Not currently legal in Standard)
3 Ritual of Soot (Not currently legal in Standard)
1 Thought Distortion (Not currently legal in Standard)