Karador, Ghost Chieftain + Timestream Navigator + Cynical Loner

Karador, Ghost Chieftain

Timestream Navigator

Cynical Loner

How it works

1. Activate Timstream Navigator by paying 2, tapping it and putting it from the battlefield onto the bottom of your library, causing you to take an extra turn after this one.
2. Declare Cynical Loner as an attacker, or tap Cynical Loner by any other method.
3. At the beginning of your second main phase, Cynical Loner triggers, causing you to search your library for Timestream Navigator and put it into your graveyard.
4. Cast Timestream Navigator from your graveyard by paying 1.
5. Repeat each turn.

This ingenious loop relies on a clever cycle of recycling and tutor-power to achieve infinite turns. Once you've earned the city's blessing, you can activate Timestream Navigator to take an extra turn, placing it conveniently on the bottom of your library. From there, Cynical Loner steps in during your second main phase with its Survival ability, tapping to tutor Timestream Navigator straight into your graveyard. Finally, Karador, Ghost Chieftain steps up as the graveyard-commander, allowing you to cast that very same Timestream Navigator right back onto the battlefield, ready to repeat the process every single turn.