Extravagant Replication, Returned Pastcaller, and Walk the Aeons

Prerequisites

• Extravagant Replication on the battlefield
• Returned Pastcaller on the battlefield
• Walk the Aeons in hand
• You have enough mana to cast Walk the Aeons each turn

Steps

1. Cast Walk the Aeons by paying its mana cost, 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 Returned Pastcaller
4. When the Returned Pastcaller token enters the battlefield, it triggers, returning Walk the Aeons from your graveyard to your hand
5. Repeat

Results

• Infinite turns