Timestream Navigator + Recruiter of the Guard + Eldrazi Displacer

Timestream Navigator

Recruiter of the Guard

Eldrazi Displacer

How it works

1. Activate Timestream 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. Blink Recruiter of the Guard using Eldrazi Displacer.
3. When Recruiter of the Guard enters, it triggers, searching your library for Timestream Navigator and putting it into your hand.
4. Cast Timestream Navigator by paying 1.
5. Repeat each turn.

This elegant loop grants you infinite turns by continuously recycling Timestream Navigator straight from your library back into your hands. Once you have the city's blessing, Timestream Navigator's activated ability lets you take an extra turn at the cost of tucking itself to the bottom of your deck. That is where Recruiter of the Guard steps in; by using Eldrazi Displacer's active colorless mana ability to repeatedly exile and blink Recruiter of the Guard, its entering trigger reliably tutors the Navigator right back to your hand so you can recast and repeat the process indefinitely.