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Yorion Dimir Inverter
A Pioneer deck, by jessy_samek
3rd place at a tournament in Magic Online on 2020-05-20

Maindeck:

Creatures
4 Inverter of Truth (Banned in Pioneer)
4 Thassa's Oracle

Enchantments
4 Omen of the Sea
4 Trial of Ambition

Instants
4 Dig Through Time
4 Fatal Push
2 Hero's Downfall
2 Neutralize
4 Opt

Legendary Enchantments
1 Oath of Jace

Legendary Planeswalkers
4 Jace, Wielder of Mysteries
3 Narset, Parter of Veils

Sorceries
1 Collective Brutality
2 Cry of the Carnarium
1 Thought Erasure
4 Thoughtseize

Basic Lands
7 Island
3 Swamp

Lands
4 Choked Estuary
4 Drowned Catacomb
4 Fabled Passage
4 Fetid Pools
2 Temple of Deceit
4 Watery Grave

Sideboard:
2 Damping Sphere
4 Mystical Dispute
1 Negate
1 Yorion, Sky Nomad
2 Oath of Liliana
2 Ashiok, Nightmare Muse
1 Narset, Parter of Veils
2 Cry of the Carnarium