If Timestream Navigator is in your library, activate Oriq Loremage by tapping it, searching your library for Timestream Navigator and putting it into your graveyard.
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.
If you don't have the city's blessing, Timestream Navigator gives you the city's blessing.
Activate Timestream Navigator by paying {2}{U}{U}, tapping it and putting it on the bottom of your library from the battlefield, causing you to take an extra turn after this one.
Repeat each turn.

Infinite turns

Admiral Brass, Unsinkable

Oriq Loremage

Timestream Navigator

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.
If you don't have the city's blessing, Timestream Navigator gives you the city's blessing.
Activate Timestream Navigator by paying {2}{U}{U}, tapping it and putting it on the bottom of your library from the battlefield, causing you to take an extra turn after this one.
Activate Cellar Door by paying {3} and tapping it, searching your library for Timestream Navigator, putting it into your graveyard and creating a 2/2 Zombie creature token.
Repeat each turn.

Combos with "Admiral Brass, Unsinkable"