Niko, Light of Hope + Timestream Navigator + Baboon Spirit

Niko, Light of Hope

Timestream Navigator

Baboon Spirit

How it works

1. Activate Niko by paying 2 and tapping it, exiling Timestream Navigator and causing Shards you control to become a copy of Timestream Navigator until the end step.
2. Activate a Shard 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.
3. Activate Baboon Spirit by paying 3, blinking Niko.
4. When Niko enters, it triggers, creating two Shard tokens.
5. At the beginning of the next end step, Timestream Navigator is returned from exile to the battlefield.
6. Repeat each turn.