Arcane Laboratory, and Knowledge Pool

Prerequisites

• Arcane Laboratory on the battlefield
• Knowledge Pool on the battlefield

Steps

1. Whenever a player casts a spell from their hand, Knowledge Pool triggers, exiling that spell
2. Because Arcane Laboratory prevents players from casting more than one spell each turn, players cannot cast the spell permitted by Knowledge Pool, or any other spell that turn

Results

• Exile all spells cast from a player's hand
• Players can only cast one spell per turn