Muldrotha, the Gravetide + Timestream Navigator + Riptide Shapeshifter

Prerequisites

• You have the city's blessing.
• Timestream Navigator does not have summoning sickness.
• You do not have any Human, Pirate, or Wizard creature cards in your library

Steps

1. 1Activate Timstream 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 Riptide Shapeshifter by paying and sacrificing it, naming any of Timestream Navigator's types, and then revealing Timestream Navigator from your library and putting it onto the battlefield.
3. 3Move to your next turn.
4. 4Cast Riptide Shapeshifter from your graveyard by paying .
5. 5Repeat.

Effects

• Infinite turns
• Lock