Enigmatic Incarnation + Rancor + Timestream Navigator

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

GU identity

Commander legal

The 3 combo pieces

• Enigmatic Incarnation
• Rancor
• Timestream Navigator

What must be in place

You have the city's blessing.
Timestream Navigator does not have summoning sickness.
Rancor attached to any other creature except Timestream Navigator.

How to execute it

1. Activate Timestream Navigator by paying {2}{U}{U}, tapping it and putting it onto the bottom of your library, causing you to take an extra turn after this one.
2. At the beginning of your end step, Enigmatic Incarnation triggers, causing you to sacrifice Rancor and then search your library for Timestream Navigator and put it onto the battlefield.
3. Rancor triggers, returning itself from your graveyard to your hand.
4. Move to your next turn.
5. Cast Rancor by paying {G}, attaching it to any other creature you control.
6. Repeat.

What the combo produces

• Infinite turns
• Lock