Shirei, Shizo's Caretaker + Coretapper + Magistrate's Scepter

Prerequisites

• Coretapper does not have summoning sickness.

Steps

1. 1Activate Coretapper's first ability by tapping it, putting a charge counter on Magistrate's Scepter.
2. 2Activate Coretapper's second ability by sacrificing it.
3. 3When Coretapper dies, Shirei triggers, creating a delayed triggered ability.
4. 4Resolve Coretapper's ability, putting two charge counters on Magistrate's Scepter.
5. 5Activate Magistrate's Scepter's second ability by tapping it and removing three charge counters from it, taking an extra turn after this one.
6. 6At the beginning of your end step, Shirei's delayed ability from step 3 triggers, returning Coretapper from your graveyard to the battlefield.
7. 7Repeat each turn.

Effects

• Infinite turns
• Lock