Kurkesh, Onakke Ancient, Magistrate's Scepter, and Contagion Engine

Prerequisites

• Kurkesh, Onakke Ancient on the battlefield
• Magistrate's Scepter on the battlefield
• Contagion Engine on the battlefield
• Magistate's Scepter has at least two charge counters on it
• each odd-numbered turn, with available each even-numbered turn available

Steps

1. Activate Contagion Engine by paying and tapping it
2. Kurkesh triggers, choose not to pay for the trigger
3. Resolve the Contagion Engine ability, putting two charge counters on Magistrate's Scepter
4. Activate Magistrate's Scepter's second ability by tapping it and removing three charge counters from it
5. Kurkesh triggers, causing you to pay to copy Magistrate's Scepter's ability
6. Resolve both Magistrate Scepter abilities, causing you to take two extra turns after this one
7. Move to your next turn
8. Activate Magistrate's Scepter's first ability by paying and tapping it
9. Kurkesh triggers, choose not to pay for the trigger
10. Resolve the Magistrate Scepter ability, putting a charge counter on it
11. Move to your next turn
12. Repeat

Results

• Infinite turns