Omni-Show
A Legacy deck, by gottelicious
4th place at a tournament in Magic Online on 2020-05-21

Maindeck:

Artifacts
3 Lotus Petal

Enchantments
4 Omniscience

Instants
4 Brainstorm
4 Force of Will
3 Intuition
3 Veil of Summer

Legendary Creatures
3 Emrakul, the Aeons Torn
1 Griselbrand
1 Uro, Titan of Nature's Wrath

Sorceries
2 Eureka
4 Ponder
4 Preordain
4 Show and Tell

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

Lands
2 Ancient Tomb
2 Flooded Strand
4 Misty Rainforest
2 Mystic Sanctuary
1 Polluted Delta
1 Scalding Tarn
2 Tropical Island

Sideboard:
1 Brazen Borrower
2 Carpet of Flowers
1 Sylvan Library
1 Mindbreak Trap
2 Return to Nature
2 Surgical Extraction
1 Veil of Summer
1 Vendilion Clique
2 Oko, Thief of Crowns (Banned in Legacy)
2 Boseiju, Who Shelters All