Extravagant Replication, Timeless Witness, and Notorious Throng

Prerequisites

• Extravagant Replication on the battlefield
• Timeless Witness on the battlefield
• Notorious Throng in hand
• each turn available

Steps

1. Deal combat damage to an opponent using a Rogue Cast Notorious Throng for its prowl cost by paying , causing you to take an extra turn after this one
2. Move to your next turn
3. At the beginning of your upkeep, Extravagant Replication triggers, creating a token copy of Timeless Witness
4. When the Timeless Witness token enters the battlefield, it triggers, returning Notorious Throng from your graveyard to your hand
5. Repeat

Results

• Infinite turns