Muldrotha, the Gravetide, Coretapper, and Magistrate's Scepter

Prerequisites

• Muldrotha, the Gravetide on the battlefield
• Coretapper on the battlefield
• Magistrate's Scepter on the battlefield
• You have not cast an artifact and/or a creature spell using Muldrotha this turn
• Coretapper does not have summoning sickness
• each turn available

Steps

1. Activate Coretapper's first ability by tapping it, putting a charge counter on Magistrate's Scepter
2. Activate Coretapper's second ability by sacrificing it, putting two charge counters on Magistrate's Scepter
3. Activate 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
4. Cast Coretapper from your graveyard by paying
5. Repeat each turn

Results

• Infinite turns