Grolnok, the Omnivore + Timestream Navigator + Cellar Door

Prerequisites

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

Steps

1. 1Activate Timestream Navigator by paying , tapping it and putting it on the bottom of your library, causing you to take an extra turn after this one.
2. 2Activate Cellar Door by paying and tapping it, causing you to put Timestream Navigator from the bottom of your library into your graveyard and create a 2/2 Zombie creature token.
3. 3Grolnok triggers, exiling Timestream Navigator with a croak counter on it.
4. 4Cast Timestream Navigator from exile by paying .
5. 5Repeat each turn.

Effects

• Infinite turns
• Lock