Niko, Light of Hope + Timestream Navigator + Y'shtola Rhul

Prerequisites

• You have the city's blessing.
• You control a Shard that doesn't have summoning sickness.

Steps

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

Effects

• Infinite turns
• Lock