Drafna, Founder of Lat-Nam, Dynaheir, Invoker Adept, Encroaching Mycosynth, and Timestream Navigator

Prerequisites

• Drafna, Founder of Lat-Nam on the battlefield
• Dynaheir, Invoker Adept on the battlefield
• Encroaching Mycosynth on the battlefield
• Timestream Navigator in hand
• You control at least eight permanents and/or have the city's blessing
• each odd-numbered turn, with available each even-numbered turn available

Steps

1. Cast Timestream Navigator by paying
2. Holding priority, activate Drafna's second ability by paying and tapping it, copying Timestream Navigator
3. When the Timestream Navigators enter the battlefield, if you do not have the city's blessing, they trigger, giving you the city's blessing
4. Activate Dynaheir by tapping it, copying the next ability you activate this turn that costs four or more mana to activate
5. Activate the Timestream Navigator token by paying , tapping it and putting it on the bottom of your library
6. Dynaheir triggers, copying Timestream Navigator's ability
7. Resolve both Timestream Navigator abilities, causing you to take two extra turns after this one
8. Move to your first extra turn
9. Activate Drafna's first ability by paying , returning the nontoken Timestream Navigator from the battlefield to your hand
10. Move to your second extra turn
11. Repeat

Results

• Infinite turns