Don & Leo, Problem Solvers + Niko, Light of Hope + Timestream Navigator

Mana needed: {4}{U}{U} each turn

WU identity

Commander legal

The 3 combo pieces

What must be in place

You have the city's blessing.

How to execute it

  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}{U}{U}, 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. At the beginning of the next end step, Timestream Navigator is returned from exile to the battlefield. Don & Leo then triggers, blinking Niko.
  4. When Niko enters, it triggers, creating two Shard tokens.
  5. Repeat each turn.

What the combo produces