Dimir Inverter
A Pioneer deck, by masongrode
6th place at a tournament in Magic Online on 2020-05-15

Maindeck:

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

Instants
3 Dig Through Time
1 Disfigure
4 Fatal Push
1 Heartless Act
2 Hero's Downfall
2 Neutralize
4 Opt

Legendary Planeswalkers
4 Jace, Wielder of Mysteries

Sorceries
2 Thought Erasure
4 Thoughtseize

Basic Lands
5 Island
3 Swamp

Lands
1 Castle Vantress
4 Choked Estuary
4 Drowned Catacomb
4 Fabled Passage
4 Watery Grave

Sideboard:
2 Heartless Act
1 Hero's Downfall
4 Mystical Dispute
1 Kalitas, Traitor of Ghet
2 Narset, Parter of Veils
3 Cry of the Carnarium
2 Ritual of Soot