Bringer of the White Dawn, Coretapper, Magistrate's Scepter, and Lightning Greaves

Prerequisites

• Bringer of the White Dawn on the battlefield
• Coretapper on the battlefield
• Magistrate's Scepter on the battlefield
• Lightning Greaves on the battlefield
• Lightning Greaves attached to Coretapper
• 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. Move to your next turn
5. At the beginning of your upkeep, Bringer of the White Dawn triggers, returning Coretapper from your graveyard to the battlefield
6. Activate Lightning Greaves' equip ability by paying , attaching it to Coretapper
7. Repeat

Results

• Infinite turns