Brudiclad, Telchor Engineer + Quasiduplicate + Timestream Navigator

Mana needed: {3}{U}{U}{U}{U} on your first turn, with {2}{U}{U} available on each extra turn

UR identity

Commander legal

The 3 combo pieces

• Brudiclad, Telchor Engineer
• Quasiduplicate
• Timestream Navigator

What must be in place

You have the city's blessing.
Timestream Navigator does not have summoning sickness.

How to execute it

1. Cast Quasiduplicate by paying {1}{U}{U}, creating a token copy of Timestream Navigator.
2. At the beginning of your combat phase, Brudiclad triggers, creating a 2/1 Phyrexian Myr creature token, then choosing to have all tokens you control become copies of the Timestream Navigator token.
3. Activate Timestream Navigator by paying {2}{U}{U} and tapping it and putting it onto the bottom of your library, causing you to take an extra turn after this one.
4. Move to your next turn.
5. Repeat from step 2.

What the combo produces

• Infinite turns
• Lock