Forerunner of the Coalition + Timestream Navigator + Baboon Spirit

Forerunner of the Coalition

Timestream Navigator

Baboon Spirit

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. Activate Baboon Spirit by paying 3, exiling Wormfang Manta
3. At the beginning of your end step, Baboon Spirit triggers, returning Wormfang Manta from exile to the battlefield.
4. 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.
5. Move to your next turn, drawing Timestream Navigator during your draw phase.
6. Cast Timestream Navigator by paying 1.
7. Timestream Navigator enters the battlefield, triggering Forerunner of the Coalition's second ability, causing each opponent to lose 1 life.
8. Repeat.