Karador, Ghost Chieftain + Timestream Navigator + Cynical Loner

Prerequisites

• 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.

Steps

1. 1Activate Timstream Navigator by paying , 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. 2Declare Cynical Loner as an attacker, or tap Cynical Loner by any other method.
3. 3At 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. 4Cast Timestream Navigator from your graveyard by paying .
5. 5Repeat each turn.

Effects

• Infinite turns
• Lock