Kilo, Apogee Mind, Magosi, the Waterveil, and Nesting Grounds

Prerequisites

• Kilo, Apogee Mind on the battlefield
• Magosi, the Waterveil on the battlefield
• Nesting Grounds on the battlefield
• each turn available

Steps

1. Tap Kilo by any method, triggering Kilo, causing you to proliferate and put an eon counter on Magosi
2. Activate Nesting Grounds' second ability by paying and tapping it, moving an eon counter from Magosi onto Nesting Grounds
3. Activate Magosi's third ability by tapping it, removing an eon counter from it and returning it from the battlefield to your hand, causing you to take an extra turn after this one
4. Play Magosi
5. Move to your next turn
6. Tap Kilo by any method, triggering Kilo, causing you to proliferate and put an eon counter on Nesting Grounds
7. Activate Nesting Grounds' second ability by paying and tapping it, moving an eon counter from Nesting Grounds onto Magosi
8. Repeat from step 3

Results

• Infinite turns