Sultai Midrange
A Standard deck, by Jacob Fusco
2nd place at a tournament in California, Maryland, United States on 2019-03-02
As reported at http://www.starcitygames.com

Maindeck:

Creatures
1 Carnage Tyrant (Not currently legal in Standard)
3 Hostage Taker (Not currently legal in Standard)
4 Hydroid Krasis (Not currently legal in Standard)
1 Incubation Druid (Not currently legal in Standard)
4 Jadelight Ranger (Not currently legal in Standard)
4 Llanowar Elves (Not currently legal in Standard)
4 Merfolk Branchwalker (Not currently legal in Standard)
4 Wildgrowth Walker (Not currently legal in Standard)

Instants
3 Cast Down (Not currently legal in Standard)
2 Vraska's Contempt (Not currently legal in Standard)

Legendary Planeswalkers
3 Vivien Reid (Not currently legal in Standard)

Sorceries
3 Find (Not currently legal in Standard)

Basic Lands
4 Forest

Lands
4 Breeding Pool (Not currently legal in Standard)
2 Drowned Catacomb (Not currently legal in Standard)
1 Hinterland Harbor (Not currently legal in Standard)
1 Memorial to Folly (Not currently legal in Standard)
4 Overgrown Tomb (Not currently legal in Standard)
4 Watery Grave (Not currently legal in Standard)
4 Woodland Cemetery (Not currently legal in Standard)

Sideboard:
1 Carnage Tyrant (Not currently legal in Standard)
3 Kraul Harpooner (Not currently legal in Standard)
2 Assassin's Trophy (Not currently legal in Standard)
1 Cast Down (Not currently legal in Standard)
2 Disdainful Stroke
1 Vraska's Contempt (Not currently legal in Standard)
4 Duress
1 Ritual of Soot (Not currently legal in Standard)