Extravagant Replication, Scholar of the Ages, and Time Stretch

Prerequisites

• Extravagant Replication on the battlefield
• Scholar of the Ages on the battlefield
• Time Stretch in hand
• each other turn available

Steps

1. Cast Time Stretch by paying its mana cost, causing you to take two extra turns after this one
2. Move to your next turn
3. At the beginning of your upkeep, Extravagant Replication triggers, creating a token copy of Scholar of the Ages
4. When the Scholar of the Ages token enters the battlefield, it triggers, returning Time Stretch from your graveyard to your hand
5. Repeat during your second turn

Results

• Infinite turns