Mirko, Obsessive Theorist + Coretapper + Magistrate's Scepter + Power Conduit

Prerequisites

• Magistrate's Scepter has at least one charge counter on it.
• Mirko has at least 2 power.

Steps

1. 1Activate Coretapper's second ability by sacrificing it, putting two charge counters on Magistrate's Scepter.
2. 2Activate 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. 3At the beginning of your end step, Mirko's last ability triggers, returning Coretapper from your graveyard to the battlefield with a finality counter on it.
4. 4Activate Power Conduit by tapping it and removing the finality counter from Coretapper, putting a charge counter on Magistrate's Scepter.
5. 5Repeat from step 2 each turn.

Effects

• Infinite turns
• Lock