Time Vault, and Captain of the Mists

Prerequisites

• Time Vault on the battlefield
• Captain of the Mists on the battlefield
• Captain of the Mists does not have summoning sickness
• each turn available

Steps

1. Activate Captain of the Mists by paying and tapping it, untap Time Vault
2. Activate Time Vault by tapping it, causing you to take an extra turn after this one
3. Repeat each turn

Results

• Infinite turns