Urborg, Tomb of Yawgmoth, Kormus Bell, and Aether Flash

Prerequisites

• Urborg, Tomb of Yawgmoth on the battlefield
• Kormus Bell on the battlefield
• Aether Flash on the battlefield

Steps

1. Whenever a land enters the battlefield, it enters as a 1/1 Swamp creature due to Urborg and Kormus Bell
2. Aether Flash triggers, dealing 2 damage to the land
3. The land dies as a state-based action due to having less than zero toughness

Results

• Destroy all lands that enter the battlefield