Prerequisites
- Eidolon of Rhetoric on the battlefield
 - Possibility Storm on the battlefield
 
Steps
- Any time a player would cast a spell, Possibility Storm exiles that spell and reveals cards until you find one they could cast
 - Eidolon of Rhetoric prevents them from casting a second spell resulting in a lock
 
Results
Required Cards 2

Eidolon of Rhetoric
Enchantment Creature — Spirit

Possibility Storm
Enchantment