Drafna, Founder of Lat-Nam, Encroaching Mycosynth, Lightning Greaves, and Timestream Navigator

Prerequisites

• Drafna, Founder of Lat-Nam on the battlefield
• Encroaching Mycosynth on the battlefield
• Lightning Greaves on the battlefield
• Timestream Navigator in hand
• You control at least eight permanents and/or have the city's blessing
• each turn available

Steps

1. If Drafna has summoning sickness, activate Lightning Greaves' equip ability by paying , attaching it to Drafna
2. Cast Timestream Navigator by paying
3. Holding priority, activate Drafna's second ability by paying and tapping it, copying Timestream Navigator
4. When the Timestream Navigators enter the battlefield, if you do not have the city's blessing, they trigger, giving you the city's blessing
5. Activate Drafna's first ability by paying , returning the nontoken Timestream Navigator from the battlefield to your hand
6. Activate Lightning Greaves' equip ability by paying , attaching it to the Timestream Navigator token
7. Activate the Timestream Navigator token by paying , tapping it and putting it on the bottom of your library, causing you to take an extra turn after this one
8. Repeat from step 2 each turn

Results

• Infinite turns