Mnemonic Wall, Crystal Shard, and Walk the Aeons

Prerequisites

• Mnemonic Wall in hand
• Crystal Shard on the battlefield
• Walk the Aeons in hand
• each turn available

Steps

1. Cast Walk the Aeons by paying , taking an extra turn after this one
2. Cast Mnemonic Wall by paying
3. Mnemonic Wall enters the battlefield, returning Walk the Aeons from your graveyard to your hand
4. Activate Crystal Shard by paying and tapping it, returning Mnemonic Wall from the battlefield to your hand
5. Repeat each turn

Results

• Infinite turns