Sultai Delver
A Legacy deck, by Lorenzo Tassone
3rd place at a tournament in Bologna, Italy on 2019-11-30

Maindeck:

Creatures
4 Delver of Secrets
1 Plague Engineer
4 Tarmogoyf

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

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

Sorceries
2 Inquisition of Kozilek
4 Ponder
2 Thoughtseize

Tribal Enchantments
2 Bitterblossom

Lands
1 Bayou
3 Misty Rainforest
3 Polluted Delta
3 Tropical Island
3 Underground Sea
3 Verdant Catacombs
4 Wasteland

Sideboard:
2 Grafdigger's Cage
2 Brazen Borrower
1 Collector Ouphe
2 Plague Engineer
1 Drown in the Loch
1 Force of Negation
2 Surgical Extraction
2 Veil of Summer
1 Leovold, Emissary of Trest
1 Liliana, the Last Hope