Admiral Brass, Unsinkable + Oriq Loremage + Timestream Navigator

How it works

1. 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.
2. 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.
3. If you don't have the city's blessing, Timestream Navigator gives you the city's blessing.
4. Activate Timestream Navigator by paying 2, tapping it and putting it on the bottom of your library from the battlefield, causing you to take an extra turn after this one.
5. Repeat each turn.

This elegant loop lets you chain infinite extra turns by recycling a single card right out of your graveyard. You begin by using Oriq Loremage's tap ability to tutor Timestream Navigator straight into your graveyard, setting up the engine. Once combat rolls around, Admiral Brass, Unsinkable sneaks Timestream Navigator back onto the battlefield with a finality counter and haste, granting you the city's blessing if you haven't earned it yet. Finally, you tap Timestream Navigator to take an extra turn, tucking it neatly back to the bottom of your library so Oriq Loremage can fetch it all over again.