Kykar, Zephyr Awakener, Mnemonic Wall, and Walk the Aeons

Prerequisites

• Kykar, Zephyr Awakener on the battlefield
• Mnemonic Wall on the battlefield
• Walk the Aeons in hand
• each turn available

Steps

1. Cast Walk the Aeons by paying its mana cost
2. Kykar triggers, exiling Mnemonic Wall
3. Resolve Walk the Aeons, causing you to take an extra turn after this one
4. At the beginning of your end step, Kykar triggers, returning Mnemonic Wall from exile to the battlefield
5. When Mnemonic Wall enters, it triggers, returning Walk the Aeons from your graveyard to your hand
6. Repeat each turn

Results

• Infinite turns
• Lock