Massacre Wurm, and Life // Death

Prerequisites

• Massacre Wurm in hand
• Life // Death in hand
• available

Steps

1. Cast Life by paying
2. Cast Massacre Wurm by paying
3. When Massacre Wurm enters, it's first ability triggers, giving all opposing creatures -2/-2 until end of turn
4. All of your opponents' lands die as a state-based action due to having zero or less toughness, as they are creatures due to Life When the lands die, Massacre Wurm's second ability triggers for each land that dies this way, causing each opponent to lose 2 life for each land that died under their control

Results

• Near-infinite lifeloss
• Destroy all lands opponents control