Sultai Midrange
A Standard deck, by Charles Albert
1st place at a tournament in Clarksville, Tennessee, United States on 2019-02-23
As reported at http://www.starcitygames.com

Maindeck:

Creatures
2 Hostage Taker (Not currently legal in Standard)
4 Hydroid Krasis (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
2 Assassin's Trophy (Not currently legal in Standard)
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)
1 Vraska, Relic Seeker (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)
3 Drowned Catacomb (Not currently legal in Standard)
1 Hinterland Harbor (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:
2 Kraul Harpooner (Not currently legal in Standard)
3 Thief of Sanity (Not currently legal in Standard)
2 Thrashing Brontodon (Not currently legal in Standard)
1 The Eldest Reborn (Not currently legal in Standard)
3 Negate
4 Duress