Maha, Its Feathers Night, and Pestilence Demon

Prerequisites

• Maha, Its Feathers Night on the battlefield
• Pestilence Demon on the battlefield
• each turn available

Steps

1. During any turn, activate Pestilence Demon by paying , dealing 1 damage to each creature and each player
2. Each creature your opponents control dies as a state-based action due to having 0 toughness
3. Repeat each turn as desired

Results

• Destroy all creatures opponents control during each turn