Liquimetal Coating + Timestream Navigator + Urza, Prince of Kroog

Mana needed: {8}{U}{U} each turn

WU identity

Commander legal

The 3 combo pieces

• Liquimetal Coating
• Timestream Navigator
• Urza, Prince of Kroog

What must be in place

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

How to execute it

1. Activate Liquimetal Coating by tapping it, causing Timestream Navigator to become an artifact until end of turn.
2. Activate Urza by paying {6}, creating a token copy of Timestream Navigator that is a 1/1 Soldier creature.
3. Activate the oldest Timestream Navigator by paying {2}{U}{U}, tapping it and putting it on the bottom of your library from the battlefield, causing you to take an extra turn after this one.
4. Repeat each turn.

What the combo produces

• Infinite turns
• Lock