Urtet, Remnant of Memnarch, Prosperous Partnership, and Time Sieve

Prerequisites

• Urtet, Remnant of Memnarch on the battlefield
• Prosperous Partnership on the battlefield
• Time Sieve on the battlefield
• You control at least eight additional creatures, five of which must be Myrs

Steps

1. Activate Prosperous Partnership by tapping three creatures, creating a Treasure token
2. Activate Prosperous Partnership by tapping three Myrs, creating a Treasure token
3. Repeat step 2 one additional time
4. At the beginning of your combat phase, Urtet triggers, untapping each Myr you control
5. Repeat step 2 two additional times
6. Activate Time Sieve by tapping it and sacrificing the five Treasures, causing you to take an extra turn after this one
7. Repeat each turn

Results

• Infinite turns