Timestream Navigator + Riptide Laboratory + Inalla, Archmage Ritualist

Prerequisites

• You control at least nine permanents or have the city's blessing.

Steps

1. 1Cast Timestream Navigator by paying .
2. 2Timestream Navigator enters the battlefield, triggering Inalla, causing you to pay to create a token copy of Timestream Navigator with haste.
3. 3If you do not have the city's blessing, Timestream Navigator triggers, giving you the city's blessing for the rest of the game.
4. 4Activate Riptide Laboratory by paying and tapping it, returning the nontoken Timestream Navigator to your hand from the battlefield.
5. 5Activate the token 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.
6. 6Repeat each turn.

Effects

• Infinite turns
• Lock