Requires

Muldrotha, the Gravetide must be on the battlefield. Timestream Navigator must be on the battlefield. Isochron Scepter must be on the battlefield. Entomb must be in exile (exiled by Isochron Scepter). Timesteam Navigator does not have summoning sickness. You have not cast a creature spell using Muldrotha this turn. You have the city's blessing. Mana needed: each turn

Steps

1. Activate Timestream 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. Activate Isochron Scepter by paying and tapping it, casting a copy of Entomb without paying its mana cost.
3. Resolve Entomb, searching your library for Timestream Navigator and putting it into your graveyard.
4. Cast Timestream Navigator from your graveyard by paying .
5. Repeat each turn.

Results