Transmutation Font + Timestream Navigator + Academy Manufactor + Kuldotha Forgemaster + Machine God's Effigy

Prerequisites

• You have the city's blessing and/or control nine or more permanents.

Steps

1. 1Activate Transmutation Font's first ability by tapping it, creating a Food, a Clue and a Treasure token.
2. 2Activate Kuldotha Forgemaster by tapping it, sacrificing the Food, the Clue and the Treasure, putting Machine God's Effigy from your library onto the battlefield.
3. 3If you don't have the city's blessing, Machine God's Effigy gives you the city's blessing.
4. 4Activate Machine God's Effigy 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.
5. 5Repeat each turn.

Effects

• Infinite turns
• Lock