Cynical Loner + Lurrus of the Dream-Den + Timestream Navigator

Mana needed: {3}{U}{U}{U} each turn

WUB identity

Commander legal

The 3 combo pieces

• Cynical Loner
• Lurrus of the Dream-Den
• Timestream Navigator

What must be in place

Timestream Navigator does not have summoning sickness.
You have the city's blessing.
Cynical Loner does not have summoning sickness and cannot be blocked and killed by an opponent, or you have another way to tap Cynical Loner each turn.

How to execute it

1. Activate Timstream Navigator 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.
2. Declare Cynical Loner as an attacker, or tap Cynical Loner by any other method.
3. At the beginning of your second main phase, Cynical Loner triggers, causing you to search your library for Timestream Navigator and put it into your graveyard.
4. Cast Timestream Navigator from your graveyard by paying {1}{U}.
5. Repeat each turn.

What the combo produces

• Infinite turns
• Lock