Massacre Wurm, and Nature's Revolt

Prerequisites

• Massacre Wurm in hand
• Nature's Revolt on the battlefield
• available

Steps

1. Cast Massacre Wurm by paying
2. When Massacre Wurm enters, it's first ability triggers, giving all opposing creatures -2/-2 until end of turn
3. All of your opponents' lands die as a state-based action due to having zero or less toughness, as they are creatures due to Nature's Revolt
4. 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