Sultai Death's Shadow
A Legacy deck, by TrueHero
1st place at a tournament in Magic Online on 2020-09-26

Maindeck:

Creatures
4 Death's Shadow
4 Delver of Secrets
4 Street Wraith

Instants
2 Abrupt Decay
4 Brainstorm
4 Daze
2 Drown in the Loch
1 Fatal Push
4 Force of Will

Legendary Creatures
2 Jolrael, Mwonvuli Recluse

Legendary Planeswalkers
2 Oko, Thief of Crowns (Banned in Legacy)

Sorceries
4 Ponder
1 Preordain
4 Thoughtseize

Lands
2 Breeding Pool
4 Misty Rainforest
4 Polluted Delta
1 Tropical Island
1 Underground Sea
4 Wasteland
2 Watery Grave

Sideboard:
1 Null Rod
2 Brazen Borrower
2 Plague Engineer
1 Sylvan Library
2 Submerge
3 Surgical Extraction
2 Veil of Summer
1 Life from the Loam
1 Bitterblossom