Karador, Ghost Chieftain + Coretapper + Magistrate's Scepter

Prerequisites

• You have not cast a creature spell using Karador this turn.
• 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, putting two charge counters on Magistrate's Scepter.
3. 3Activate 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. 4Cast Coretapper from your graveyard by paying .
5. 5Repeat each turn.

Effects

• Infinite turns
• Lock