Admiral Brass, Unsinkable, Cellar Door, and Timestream Navigator

Prerequisites

• Admiral Brass, Unsinkable on the battlefield
• Cellar Door on the battlefield
• Timestream Navigator in the graveyard
• You have the city's blessing and/or control at least nine permanents
• each turn available

Steps

1. At the beginning of your combat phase, Admiral Brass triggers, returning Timestream Navigator from your graveyard to the battlefield with a finality counter on it, and giving it haste
2. If you don't have the city's blessing, Timestream Navigator gives you the city's blessing
3. Activate Timestream Navigator by paying , tapping it and putting it on the bottom of your library from the battlefield, causing you to take an extra turn after this one
4. Activate Cellar Door by paying and tapping it, searching your library for Timestream Navigator, putting it into your graveyard and creating a 2/2 Zombie creature token
5. Repeat each turn

Results

• Infinite turns