Magistrate's Scepter, and Viral Drake

Prerequisites

• Magistrate's Scepter on the battlefield
• Viral Drake on the battlefield
• Magistrate's Scepter has 1 counter on it
• each turn available

Steps

1. Activate Viral Drake, proliferating the charge counter on Magistrate's Scepter
2. Repeat step one an additional two times
3. Activate Magistrate's Scepter by tapping it and removing three charge counters from it, taking an extra turn after this one
4. Repeat

Results

• Infinite turns