Knowledge Pool + Soulless Jailer

C identity

Commander legal

The 2 combo pieces

• Knowledge Pool
• Soulless Jailer

How to execute it

1. Whenever a player casts a spell from their hand, Knowledge Pool triggers, exiling the spell and allowing them to cast another nonland card exiled by Knowledge Pool without paying its mana cost.
2. Because Soulless Jailer prevents noncreature spells from being cast from exile, no player may cast noncreature spells as permitted by Knowledge Pool.

What the combo produces

• Exile all spells players cast from their hand
• Lock
• Players can't cast noncreature spells exiled by Knowledge Pool