Card

Soulless Jailer

Mana cost {2}

Permanent cards in graveyards can't enter the battlefield. Players can't cast noncreature spells from graveyards or exile.

Part of 4 known combos, 4 of them two-card. 2 official rulings.

Bracket

B1 Exhibition — Not in the same deck as its two-card combo partners: Knowledge Pool, Omen Machine, Possibility Storm, Eye of the Storm
B2 Core — Not in the same deck as its two-card combo partners: Knowledge Pool, Omen Machine, Possibility Storm, Eye of the Storm
B3 Upgraded — Not in the same deck as its early two-card combo partners: Knowledge Pool, Omen Machine, Possibility Storm, Eye of the Storm
B4 Optimized — allowed: No restriction beyond the banned list
B5 cEDH — allowed: No restriction beyond the banned list

Two-card combo with Knowledge Pool, Omen Machine, Possibility Storm, Eye of the Storm (early with Knowledge Pool, Omen Machine, Possibility Storm, Eye of the Storm)

Bracket: Lotus Vault analysis, with Commander Spellbook flags

4 known combos, 4 of them two-card.

Soulless Jailer + Knowledge Pool
Produces: Exile all spells players cast from their hand, Players can't cast noncreature spells exiled by Knowledge Pool, Lock
View on Commander Spellbook
Soulless Jailer + Omen Machine
Produces: Players can't cast noncreature spells exiled by Omen Machine, Players can't draw cards, Lock
View on Commander Spellbook
Soulless Jailer + Possibility Storm
Produces: Exile all spells players cast from their hand, Players can't cast noncreature spells exiled by Possibility Storm, Lock
View on Commander Spellbook

2023-02-04 · Wizards of the Coast
Putting a permanent card onto the battlefield from a graveyard is an impossible action while Soulless Jailer is on the battlefield.
2023-02-04 · Wizards of the Coast
Players may still cast creature spells from graveyards and from exile if an effect allows them to do so.

Rulings: Scryfall · Wizards of the Coast