Mystic Sanctuary, Aminatou, the Fateshifter, Oath of Teferi, and Time Walk

Prerequisites

• Mystic Sanctuary in hand
• Aminatou, the Fateshifter on the battlefield
• Oath of Teferi on the battlefield
• Time Walk in hand
• each turn available

Steps

1. Cast Time Walk by paying its mana cost, causing you to take an extra turn after this one
2. Activate Aminatou's first ability by putting a loyalty counter on it, causing you to loot
3. Activate Aminatou's second ability by removing a loyalty counter on it, blinking Mystic Sanctuary
4. When Mystic Sanctuary enters untapped, it triggers, putting Time Walk from your graveyard onto the top of your library
5. Move to your next turn, drawing Time Walk during your draw step
6. Repeat

Results

• Infinite turns
• Lock
• Skip your draw steps