Magistrate's Scepter, Contagion Engine, and Doubling Season

Prerequisites

• Magistrate's Scepter on the battlefield
• Contagion Engine on the battlefield
• Doubling Season on the battlefield
• each turn available

Steps

1. Activate Contagion Engine by paying and tapping it, putting four charge counters on Magistrate's Scepter
2. Activate Magistrate's Scepter's second ability by tapping it and removing three charge counters from it, causing you to take an extra turn after this one
3. Repeat each turn

Results

• Infinite turns