Forerunner of the Coalition + Timestream Navigator + Airbender Ascension

Forerunner of the Coalition

Timestream Navigator

Airbender Ascension

How it works

1. Activate Timestream Navigator by paying 2, tapping and putting it on the bottom of your library, causing you to take an extra turn after this one.
2. At the beginning of your end step, Airbender Ascension triggers, blinking Forerunner of the Coalition.
3. Forerunner of the Coalition enters, triggering its first ability, causing you to search your library for Timestream Navigator and put it on top of your library.
4. Move to your next turn, drawing Timestream Navigator during your draw phase.
5. Cast Timestream Navigator by paying 1.
6. Timestream Navigator enters the battlefield, triggering Forerunner of the Coalition's second ability, causing each opponent to lose 1 life.
7. Repeat.

This cunning loop locks down the game by turning your end step into an infinite sequence of extra turns, fueled by Timestream Navigator's self-recycling ability. Once you have the city's blessing, you can tuck Timestream Navigator to take another turn, while Airbender Ascension patiently counts your creature entries and blinks Forerunner of the Coalition at the end of your turn. That blink triggers Forerunner of the Coalition to tutor Timestream Navigator right back to the top of your library, ready to be drawn and recast on your next turn to drain your opponents out of the game.