Planar Portal + Timestream Navigator

Mana needed: {9}{U}{U}{U} each turn

U identity

Commander legal

The 2 combo pieces

• Planar Portal
• 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. Activate Timestream Navigator by paying {2}{U}{U}, tapping it and putting it on the bottom of your library, causing you to take an extra turn after this one.
2. Activate Planar Portal by paying {6} and tapping it, causing you to search your library for Timestream Navigator and putting it into your hand.
3. Cast Timestream Navigator by paying {1}{U}.
4. Repeat each turn.

What the combo produces

• Infinite turns
• Lock