Temur Delver
A Legacy deck, by wambocombo2020
1st place at a tournament in Magic Online on 2020-10-04

Maindeck:

Creatures
4 Delver of Secrets
3 Dreadhorde Arcanist (Banned in Legacy)
2 Hooting Mandrills
3 Tarmogoyf

Instants
4 Brainstorm
4 Daze
2 Force of Negation
4 Force of Will
4 Lightning Bolt
1 Spell Pierce
1 Spell Snare

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

Sorceries
1 Chain Lightning
4 Ponder
1 Preordain

Lands
2 Flooded Strand
2 Misty Rainforest
2 Polluted Delta
2 Scalding Tarn
3 Tropical Island
3 Volcanic Island
4 Wasteland
1 Wooded Foothills

Sideboard:
1 Null Rod
1 Winter Orb
1 Sylvan Library
1 Ancient Grudge
2 Pyroblast
2 Red Elemental Blast
1 Run Afoul
2 Submerge
2 Surgical Extraction
1 Klothys, God of Destiny
1 Blazing Volley