Omni Tell
A Legacy deck, by MaxMagicer
1st place at a tournament in Magic Online on 2020-08-09

Maindeck:

Enchantments
4 Omniscience
2 Sylvan Library

Instants
4 Brainstorm
3 Cunning Wish
4 Force of Will
2 Impulse
3 Veil of Summer

Legendary Creatures
2 Emrakul, the Aeons Torn
1 Griselbrand

Snow Creatures
2 Ice-Fang Coatl

Sorceries
2 Drawn from Dreams
4 Ponder
4 Preordain
4 Show and Tell

Basic Snow Lands
1 Snow-Covered Forest
3 Snow-Covered Island

Lands
2 City of Traitors
2 Flooded Strand
4 Misty Rainforest
1 Mystic Sanctuary
2 Polluted Delta
1 Prismatic Vista
1 Scalding Tarn
2 Tropical Island

Sideboard:
2 Carpet of Flowers
1 Disallow
1 Echoing Truth
1 Firemind's Foresight
1 Flusterstorm
1 Force of Negation
1 Return to Nature
1 Shared Summons
1 Spell Pierce
3 Surgical Extraction
1 Veil of Summer
1 Boseiju, Who Shelters All