Knowledge Pool, Moderation, and Coveted Falcon

Prerequisites

• Knowledge Pool in hand
• Moderation on the battlefield
• Coveted Falcon on the battlefield
• available

Steps

1. Activate Coveted Falcon by paying , turning it face up
2. Coveted Falcon triggers, causing an opponent to gain control of Moderation and causing you to draw a card
3. Cast Knowledge Pool by paying
4. Whenever the opponent that controls Moderation casts a spell from their hand, Knowledge Pool triggers, exiling that spell
5. Because Moderation prevents the opponent from casting more than one spell each turn, the opponent cannot cast the spell permitted by Knowledge Pool, or any other spell that turn

Results

• Lock
• Target opponent can only cast one spell per turn
• Exile all spells target opponent casts from their hand