Magistrate's Scepter, Energy Chamber, and Lithoform Engine

Prerequisites

• Magistrate's Scepter on the battlefield
• Energy Chamber on the battlefield
• Lithoform Engine on the battlefield
• Magistrate's Scepter has three charge counters on it
• each turn available

Steps

1. Activate Magistrate's Scepter, removing 3 charge counters to take an extra turn
2. Activate Lithoform Engine, copying the extra turn ability
3. Pass the turn
4. At the beginning of your upkeep, Energy Chamber triggers, putting a charge counter on Magistrate's Scepter
5. Activate Magistrate's Scepter, putting a charge counter on itself
6. Activate Lithoform Engine, copying the trigger
7. Pass the turn
8. Repeat

Results

• Infinite turns